Merge pull request #796 from Tobion/psr4

Use PSR-4

Author: Tobion

composer.json

@@ -4,7 +4,7 @@
     "type": "project",
     "description": "The \"Symfony Standard Edition\" distribution",
     "autoload": {
-        "psr-0": { "": "src/", "SymfonyStandard": "app/" }
+        "psr-4": { "": "src/", "SymfonyStandard\\": "app/" }
     },
     "require": {
         "php": ">=5.3.3",