Cleanup phpunit configs and PSR-4 autoloading and namespaces for tests

tests/Functional/FunctionalTestCase.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Tests\FFMpeg\Functional;
+
+use FFMpeg\FFMpeg;
+
+abstract class FunctionalTestCase extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @return FFMpeg
+     */
+    public function getFFMpeg()
+    {
+        return FFMpeg::create(array('timeout' => 300));
+    }
+}