downgrade requirements, add laravel 4.0 support

composer.json

@@ -15,7 +15,7 @@
     ],
     "require": {
         "php": ">=5.4.0",
-        "illuminate/support":"~4.1"
+        "illuminate/support":"~4.0"
     },
     "autoload": {
         "psr-0": {