Update README.md

Adding information about laravel version supported

Author: Grummfy

README.md

@@ -61,4 +61,8 @@ Once you completed the configuration you can use Laravel Queue API. If you used
 Unit tests will be provided soon.
 
 ####Contribution
-You can contribute to this package by discovering bugs and opening issues. Enjoy!
+You can contribute to this package by discovering bugs and opening issues. Enjoy!
+
+####Supported version of Laravel
+4.0, 4.1, 4.2, 5.0
+This version is matching by the release tag of this library.