Review and rework Composer tasks.

Mage/Task/BuiltIn/Composer/InstallTask.php

@@ -0,0 +1,30 @@
+<?php
+namespace Mage\Task\BuiltIn\Composer;
+
+use Mage\Task\AbstractTask;
+use Mage\Task\ErrorWithMessageException;
+
+class InstallTask extends AbstractTask
+{
+    /**
+     * Returns the Title of the Task
+     * @return string
+     */
+    public function getName()
+    {
+        return 'Install vendors via Composer [built-in]';
+    }
+
+    /**
+     * Runs the task
+     *
+     * @return boolean
+     * @throws ErrorWithMessageException
+     */
+    public function run()
+    {
+        $composerPath = $this->getConfig()->general('composer_path', 'php composer.phar');
+
+        return $this->runCommand($composerPath . ' install');
+    }
+}