updated version to 2.4

Author: fabpot

README.md

@@ -107,7 +107,7 @@ https://github.com/fabpot/Silex/blob/master/src/Silex/Provider/ValidatorServiceP
 
 Documentation:
 
-http://symfony.com/doc/2.3/book/validation.html
+http://symfony.com/doc/2.4/book/validation.html
 
 JSR-303 Specification:
 

composer.json

@@ -39,7 +39,7 @@
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
-            "dev-master": "2.3-dev"
+            "dev-master": "2.4-dev"
         }
     }
 }