diff --git a/.gitignore b/.gitignore
index 67cac47..ff6c051 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,5 @@ vendor
 *.deb
 
 src/*.tgz
+
+tags
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..37191d5
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,11 @@
+language: php
+php:
+  - 5.6
+  - 5.5
+  - 5.4
+  - 5.3
+
+install:
+  - composer install
+
+script: vendor/bin/phpunit tests
diff --git a/CHANGELOG-0.0.4.md b/CHANGELOG-0.0.4.md
new file mode 100644
index 0000000..8b53ee2
--- /dev/null
+++ b/CHANGELOG-0.0.4.md
@@ -0,0 +1,3 @@
+# BC Breaks
+
+* Build will returns the dpkg command instead print it to the user
diff --git a/README.md b/README.md
index 4d0c0c7..71bab00 100644
--- a/README.md
+++ b/README.md
@@ -30,9 +30,16 @@ $packager->mount("/path/to/docs", "/usr/share/docs");
 //Creates folders using mount points
 $packager->run();
 
-//Creates the Debian package
-$packager->build();
+//Get the Debian package command
+echo $packager->build();
 ```
+
+**Create the Package**
+
+```
+$(php pack.php)
+```
+
 ## Pre-Post scripts
 
 Optianally you can add script for different hooks
@@ -45,7 +52,7 @@ Optianally you can add script for different hooks
    * Run pre package remove
  * post-remove
    * Run post package remove
-   
+
 Adding scripts
 
 ```php
@@ -67,4 +74,4 @@ echo "Goodbye Cruel World"
 
 exit 0
 ```
- 
+
diff --git a/composer.json b/composer.json
index 008e4e5..5d6f090 100644
--- a/composer.json
+++ b/composer.json
@@ -20,9 +20,12 @@
     "require": {
         "php": ">=5.3.3"
     },
+    "require-dev": {
+        "phpunit/phpunit": "~4"
+    },
     "autoload": {
         "psr-0": {
-            "wdm": "src/"
+            "wdm": ["src/", "tests/"]
         }
     },
     "repositories": [
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..fe52725
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,762 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "This file is @generated automatically"
+    ],
+    "hash": "b89ac83d7c4abbd18d2ada4d5e2eeae7",
+    "packages": [],
+    "packages-dev": [
+        {
+            "name": "doctrine/instantiator",
+            "version": "1.0.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/instantiator.git",
+                "reference": "f976e5de371104877ebc89bd8fecb0019ed9c119"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/f976e5de371104877ebc89bd8fecb0019ed9c119",
+                "reference": "f976e5de371104877ebc89bd8fecb0019ed9c119",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3,<8.0-DEV"
+            },
+            "require-dev": {
+                "athletic/athletic": "~0.1.8",
+                "ext-pdo": "*",
+                "ext-phar": "*",
+                "phpunit/phpunit": "~4.0",
+                "squizlabs/php_codesniffer": "2.0.*@ALPHA"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Doctrine\\Instantiator\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Marco Pivetta",
+                    "email": "ocramius@gmail.com",
+                    "homepage": "http://ocramius.github.com/"
+                }
+            ],
+            "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
+            "homepage": "https://github.com/doctrine/instantiator",
+            "keywords": [
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+                "instantiate"
+            ],
+            "time": "2014-10-13 12:58:55"
+        },
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+            "name": "phpunit/php-code-coverage",
+            "version": "2.0.13",
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+                "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
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+                "phpunit/php-token-stream": "~1.3",
+                "sebastian/environment": "~1.0",
+                "sebastian/version": "~1.0"
+            },
+            "require-dev": {
+                "ext-xdebug": ">=2.1.4",
+                "phpunit/phpunit": "~4.1"
+            },
+            "suggest": {
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+                "ext-xdebug": ">=2.2.1",
+                "ext-xmlwriter": "*"
+            },
+            "type": "library",
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+                "branch-alias": {
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+                }
+            },
+            "autoload": {
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+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "include-path": [
+                ""
+            ],
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sb@sebastian-bergmann.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library that provides collection, processing, and rendering functionality for PHP code coverage information.",
+            "homepage": "https://github.com/sebastianbergmann/php-code-coverage",
+            "keywords": [
+                "coverage",
+                "testing",
+                "xunit"
+            ],
+            "time": "2014-12-03 06:41:44"
+        },
+        {
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+            "version": "1.3.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/php-file-iterator.git",
+                "reference": "acd690379117b042d1c8af1fafd61bde001bf6bb"
+            },
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+                "reference": "acd690379117b042d1c8af1fafd61bde001bf6bb",
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+            },
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+                    "email": "sb@sebastian-bergmann.de",
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+            "homepage": "https://github.com/sebastianbergmann/php-file-iterator/",
+            "keywords": [
+                "filesystem",
+                "iterator"
+            ],
+            "time": "2013-10-10 15:34:57"
+        },
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+            "name": "phpunit/php-text-template",
+            "version": "1.2.0",
+            "source": {
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+                "url": "https://github.com/sebastianbergmann/php-text-template.git",
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+            "notification-url": "https://packagist.org/downloads/",
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+                    "name": "Sebastian Bergmann",
+                    "email": "sb@sebastian-bergmann.de",
+                    "role": "lead"
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+            "keywords": [
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+            ],
+            "time": "2014-01-30 17:20:04"
+        },
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+            "keywords": [
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+        },
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+            "license": [
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+                    "email": "sb@sebastian-bergmann.de",
+                    "role": "lead"
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+            "description": "Mock Object library for PHPUnit",
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+            "license": [
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+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
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+                    "name": "Volker Dusch",
+                    "email": "github@wallbash.com"
+                },
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+                    "name": "Sebastian Bergmann",
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+            ],
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+            "homepage": "http://www.github.com/sebastianbergmann/environment",
+            "keywords": [
+                "Xdebug",
+                "environment",
+                "hhvm"
+            ],
+            "time": "2014-10-25 08:00:45"
+        },
+        {
+            "name": "sebastian/exporter",
+            "version": "1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/exporter.git",
+                "reference": "c7d59948d6e82818e1bdff7cadb6c34710eb7dc0"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/c7d59948d6e82818e1bdff7cadb6c34710eb7dc0",
+                "reference": "c7d59948d6e82818e1bdff7cadb6c34710eb7dc0",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Volker Dusch",
+                    "email": "github@wallbash.com"
+                },
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@2bepublished.at"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                },
+                {
+                    "name": "Adam Harvey",
+                    "email": "aharvey@php.net"
+                }
+            ],
+            "description": "Provides the functionality to export PHP variables for visualization",
+            "homepage": "http://www.github.com/sebastianbergmann/exporter",
+            "keywords": [
+                "export",
+                "exporter"
+            ],
+            "time": "2014-09-10 00:51:36"
+        },
+        {
+            "name": "sebastian/version",
+            "version": "1.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/version.git",
+                "reference": "b6e1f0cf6b9e1ec409a0d3e2f2a5fb0998e36b43"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/version/zipball/b6e1f0cf6b9e1ec409a0d3e2f2a5fb0998e36b43",
+                "reference": "b6e1f0cf6b9e1ec409a0d3e2f2a5fb0998e36b43",
+                "shasum": ""
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library that helps with managing the version number of Git-hosted PHP projects",
+            "homepage": "https://github.com/sebastianbergmann/version",
+            "time": "2014-03-07 15:35:33"
+        },
+        {
+            "name": "symfony/yaml",
+            "version": "v2.6.1",
+            "target-dir": "Symfony/Component/Yaml",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/Yaml.git",
+                "reference": "3346fc090a3eb6b53d408db2903b241af51dcb20"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/Yaml/zipball/3346fc090a3eb6b53d408db2903b241af51dcb20",
+                "reference": "3346fc090a3eb6b53d408db2903b241af51dcb20",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.6-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Symfony\\Component\\Yaml\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Symfony Community",
+                    "homepage": "http://symfony.com/contributors"
+                },
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                }
+            ],
+            "description": "Symfony Yaml Component",
+            "homepage": "http://symfony.com",
+            "time": "2014-12-02 20:19:20"
+        }
+    ],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "platform": {
+        "php": ">=5.3.3"
+    },
+    "platform-dev": []
+}
diff --git a/src/example.php b/example.php
similarity index 91%
rename from src/example.php
rename to example.php
index 00cd7e6..61e952b 100644
--- a/src/example.php
+++ b/example.php
@@ -23,5 +23,5 @@ $packager->mount(__DIR__ . "/../../diff", "/my-differ");
 //Creates folders using mount points
 $packager->run();
 
-//Creates the Debian package
-$packager->build();
\ No newline at end of file
+//Get the Debian package command
+echo $packager->build();
diff --git a/src/package.xml b/src/package.xml
deleted file mode 100644
index a701ff0..0000000
--- a/src/package.xml
+++ /dev/null
@@ -1,62 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<package packagerversion="1.8.0" version="2.0" xmlns="http://pear.php.net/dtd/package-2.0" xmlns:tasks="http://pear.php.net/dtd/tasks-1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://pear.php.net/dtd/tasks-1.0
-    http://pear.php.net/dtd/tasks-1.0.xsd
-    http://pear.php.net/dtd/package-2.0
-    http://pear.php.net/dtd/package-2.0.xsd">
- <name>Corley_Deb_Packager</name>
- <channel>pear.corley.it</channel>
- <summary>Corley DEB packager.</summary>
- <description>
-   This library provides mechanisms for generate valid .deb files useful
-   for software distribution for GNU/Linux Debian based systems.
- </description>
- <lead>
-  <name>Walter Dal Mut</name>
-  <user>wdalmut</user>
-  <email>walter.dalmut at corley.it</email>
-  <active>yes</active>
- </lead>
- <contributor>
-   <name>Gabriele Mittica</name>
-   <user>gmittica</user>
-   <email>gabriele.mittica at corley.it</email>
-   <active>yes</active>
- </contributor>
- <date>2012-06-04</date>
- <time>12:46:12</time>
- <version>
-  <release>0.0.3</release>
-  <api>0.0.3</api>
- </version>
- <stability>
-  <release>alpha</release>
-  <api>alpha</api>
- </stability>
- <license uri="http://www.opensource.org/licenses/mit-license.php">MIT</license>
- <notes>In this release the first proposal.</notes>
- <contents>
-   <dir name="" baseinstalldir="/">
-     <dir name="wdm">
-       <dir name="debian">
-         <dir name="control">
-           <file role="php" name="StandardFile.php" />
-         </dir>
-         <file role="php" name="Autoloader.php" />
-         <file role="php" name="IPackager.php" />
-         <file role="php" name="Packager.php" />
-       </dir>
-     </dir>
-   </dir>
- </contents>
- <dependencies>
-  <required>
-   <php>
-    <min>5.3.3</min>
-   </php>
-   <pearinstaller>
-    <min>1.4.0</min>
-   </pearinstaller>
-  </required>
- </dependencies>
- <phprelease />
-</package>
diff --git a/src/wdm/debian/Packager.php b/src/wdm/debian/Packager.php
index 3299e22..9f2a40b 100644
--- a/src/wdm/debian/Packager.php
+++ b/src/wdm/debian/Packager.php
@@ -192,8 +192,8 @@ class Packager
             $debPackageName = basename($this->_outputPath . ".deb");
         }
 
-        $command = "dpkg -b {$this->_outputPath} {$debPackageName}" . PHP_EOL;
+        $command = "dpkg -b {$this->_outputPath} {$debPackageName}";
 
-        echo $command;
+        return $command;
     }
 }
diff --git a/src/wdm/debian/control/StandardFile.php b/src/wdm/debian/control/StandardFile.php
index 89767e2..7092840 100644
--- a/src/wdm/debian/control/StandardFile.php
+++ b/src/wdm/debian/control/StandardFile.php
@@ -91,9 +91,9 @@ class StandardFile
         return $this->_setProperty("Pre-Depends", $this->_transformList($depends));
     }
 
-    public function setRecommends($depends)
-    {
-        return $this->_setProperty("Reccommends", $depends);
+    public function setRecommends($depends)
+    {
+        return $this->_setProperty("Reccommends", $depends);
     }
 
     public function setSuggests($depends)
@@ -134,10 +134,10 @@ class StandardFile
 
     private function _transformList($depends)
     {
-        if (is_array($depends)) {
-            $depends = implode(", ", $depends);
-        } else {
-            $depends = $depends;
+        if (is_array($depends)) {
+            $depends = implode(", ", $depends);
+        } else {
+            $depends = $depends;
         }
 
         return $depends;
@@ -150,28 +150,28 @@ class StandardFile
     }
 
     public function offsetExists ($offset) {
-        return array_key_exists($offset, $this->_keys);
-    }
+        return array_key_exists($offset, $this->_keys);
+    }
 
     public function offsetGet ($offset) {
         if ($this->offsetExists($offset)) {
             return $this->_keys[$offset];
         } else {
             return null;
-        }
-    }
-    
+        }
+    }
+
     public function offsetSet ($offset, $value) {
         if (!$this->offsetExists($offset)) {
-            throw new \Exception("Invalid property for this control file.");
+            throw new \InvalidArgumentException("Invalid property '{$offset}' for this control file.");
         }
-        $this->_keys[$offset] = $value;
-    }
+        $this->_keys[$offset] = $value;
+    }
 
     public function offsetUnset ($offset) {
         if ($this->offsetExists($offset)) {
             unset($this->_keys[$offset]);
-        }
+        }
     }
 
     /**
diff --git a/tests/wdm/debian/PackagerTest.php b/tests/wdm/debian/PackagerTest.php
new file mode 100644
index 0000000..8c6bb0e
--- /dev/null
+++ b/tests/wdm/debian/PackagerTest.php
@@ -0,0 +1,17 @@
+<?php
+namespace wdm\debian;
+
+class PackagerTest extends \PHPUnit_Framework_TestCase
+{
+    public function setUp()
+    {
+        $this->object = new Packager();
+    }
+
+    public function testRetrieveTheBuildCommand()
+    {
+        $this->object->setOutputPath("/tmp");
+
+        $this->assertEquals("dpkg -b /tmp my.deb", $this->object->build("my.deb"));
+    }
+}
diff --git a/tests/wdm/debian/control/StandardFileTest.php b/tests/wdm/debian/control/StandardFileTest.php
new file mode 100644
index 0000000..81b539a
--- /dev/null
+++ b/tests/wdm/debian/control/StandardFileTest.php
@@ -0,0 +1,73 @@
+<?php
+namespace wdm\debian\control;
+
+class StandardFileTest extends \PHPUnit_Framework_TestCase
+{
+    private $object;
+
+    public function setUp()
+    {
+        $this->object = new StandardFile();
+    }
+
+    public function testMinimumFile()
+    {
+        $conf = (string)$this->object;
+
+        $expected = <<<OEF
+Version: 0.1
+Section: web
+Priority: optional
+Architecture: all
+Essential: no
+Installed-Size: 1024
+Maintainer: name [email]
+Provides: your-company
+Description: Your description
+
+OEF;
+        $this->assertEquals($expected, $conf);
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     * @expectedExceptionMessage Invalid property 'MyPersonalSection' for this control file.
+     */
+    public function testFilterMissingOrInvalidProperties()
+    {
+        $this->object["MyPersonalSection"] = "Test";
+    }
+
+    public function testOverwriteConfiguration()
+    {
+        $this->object["Version"] = "1.0.1";
+        $this->object["Section"] = "Software";
+        $this->object["Priority"] = "security";
+        $this->object["Architecture"] = "x86";
+        $this->object["Essential"] = "yes";
+        $this->object["Installed-Size"] = "2048";
+        $this->object["Maintainer"] = "Walter Dal Mut [walter.dalmut at gmail dot com]";
+        $this->object["Provides"] = "Corley SRL";
+        $this->object["Description"] = "My Desc";
+        $this->object["Depends"] = "php5-cli";
+        $this->object["Recommends"] = "php5-curl";
+
+        $conf = (string)$this->object;
+
+        $expected = <<<OEF
+Version: 1.0.1
+Section: Software
+Priority: security
+Architecture: x86
+Essential: yes
+Depends: php5-cli
+Recommends: php5-curl
+Installed-Size: 2048
+Maintainer: Walter Dal Mut [walter.dalmut at gmail dot com]
+Provides: Corley SRL
+Description: My Desc
+
+OEF;
+        $this->assertEquals($expected, $conf);
+    }
+}