fixed autoloading for tests

autoload.php.dist

@@ -15,10 +15,12 @@ $loader->registerNamespaces(array(
     'Monolog'          => __DIR__.'/vendor/monolog/src',
 ));
 $loader->registerPrefixes(array(
-    'Swift_' => __DIR__.'/vendor/swiftmailer/lib/classes',
-    'Twig_'  => __DIR__.'/vendor/twig/lib',
+    'Twig_' => __DIR__.'/vendor/twig/lib',
 ));
 $loader->registerPrefixFallbacks(array(
-    __DIR__.'/../vendor/symfony/src/Symfony/Component/Locale/Resources/stubs',
+    __DIR__.'/vendor/symfony/src/Symfony/Component/Locale/Resources/stubs',
 ));
 $loader->register();
+
+require_once __DIR__.'/vendor/swiftmailer/lib/classes/Swift.php';
+Swift::registerAutoload(__DIR__.'/vendor/swiftmailer/lib/swift_init.php');