add gitter

Author: saki

README.md

@@ -1,11 +1,16 @@
 # InvalidPlayer
+
 A universal player based on [SYEngine](https://github.com/amamiya/SYEngine)
 
 **research purposes only**
 
 Insert the follow code to your browser favorites:
+
 ``` Javascript
 javascript:!((function(){this.url=document.location.href;url="weburl://?url="+encodeURI(url);document.location.href=url;})());
 ```
 
 [![Build status](https://ci.appveyor.com/api/projects/status/ppvgodpusq12g59t?svg=true)](https://ci.appveyor.com/project/saki-saki/invalidplayer)
+
+[![Gitter](https://badges.gitter.im/saki-saki/InvalidPlayer.svg)](https://gitter.im/saki-saki/InvalidPlayer?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+