Use sensiolabs/ansi-to-html to parse the build logs.

Added an AnsiConverter helper.

Use the AnsiConverter in the email and page templates that display the build log.

Use a dedicated stylesheet for the ANSI converter.

It can be customized.
It can be inlined in the notifications.

Do not use ProphecyTestCase when not needed.

Tests/PHPCI/Helper/AnsiConverterTest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace PHPCI\Helper\Tests;
+
+use PHPCI\Helper\AnsiConverter;
+use PHPUnit_Framework_TestCase;
+
+class AnsiConverterTest extends PHPUnit_Framework_TestCase
+{
+    public function testConvert_convertToHtml()
+    {
+        $input = "\e[31mThis is red !\e[0m";
+
+        $expectedOutput = '<span class="ansi_color_bg_black ansi_color_fg_red">This is red !</span>';
+
+        $actualOutput = AnsiConverter::convert($input);
+
+        $this->assertEquals($expectedOutput, $actualOutput);
+    }
+}