Backward Laravel 4 compatibility

Package is compatible with L4, no reason not to allow L4 users to benefits from it :)

composer.json

@@ -15,7 +15,7 @@
 
     "require": {
         "php": ">=5.4.0",
-        "illuminate/support": "5.0.*"
+        "illuminate/support": "4.*||5.0.*"
     },
 
     "autoload": {