fixed version in composer.json

composer.json

@@ -11,7 +11,7 @@
         }
     ],
     "require": {
-        "symfony/framework-bundle": "2.*"
+        "symfony/framework-bundle": "2.0.*"
     },
     "autoload": {
         "psr-0": { "Sensio\\Bundle\\DistributionBundle": "" }