Update README.md

README.md

@@ -4,3 +4,13 @@ A small clone of [1024](https://play.google.com/store/apps/details?id=com.veewo.
 Made just for fun. [Play it here!](http://gabrielecirulli.github.io/2048/)
 
 [![Screenshot](http://pictures.gabrielecirulli.com/2048-20140309-234100.png)](http://pictures.gabrielecirulli.com/2048-20140309-234100.png)
+
+That screenshot is fake by, the way. I never reached 2048 :smile:
+
+## Contributing
+Changes and improvements are more than welcome! Feel free to fork and open a pull request. Please make your changes in a specifically made branch and request to pull on `master`! If you can, please make sure the game fully works before sending the PR, as that will help speed up the process.
+
+You can find the same information in the [contributing guide.](https://github.com/gabrielecirulli/2048/blob/master/CONTRIBUTING.txt)
+
+## License
+2048 is licensed under the [MIT license.](https://github.com/gabrielecirulli/2048/blob/master/LICENSE.txt)