Adding Builder::getSystemConfig() to provide easy access to config.yml.

PHPCI/Builder.php

@@ -116,6 +116,16 @@ class Builder
         return isset($this->config[$key]) ? $this->config[$key] : null;
     }
 
+    /**
+     * Access a variable from the config.yml
+     * @param $key
+     * @return mixed
+     */
+    public function getSystemConfig($key)
+    {
+        return \b8\Registry::getInstance()->get($key);
+    }
+
     /**
     * Access the build.
     * @param Build