bumped 2.4 to stable

Author: fabpot

composer.json

@@ -16,7 +16,7 @@
         "symfony/swiftmailer-bundle": "~2.3",
         "symfony/monolog-bundle": "~2.4",
         "sensio/distribution-bundle": "~2.3",
-        "sensio/framework-extra-bundle": "~3.0@dev",
+        "sensio/framework-extra-bundle": "~3.0",
         "sensio/generator-bundle": "~2.3",
         "incenteev/composer-parameter-handler": "~2.0"
     },
@@ -39,7 +39,6 @@
     "config": {
         "bin-dir": "bin"
     },
-    "minimum-stability": "beta",
     "extra": {
         "symfony-app-dir": "app",
         "symfony-web-dir": "web",