Chat moved from gitter to matrix

README.md

@@ -1,6 +1,5 @@
 # Yi
 
-[![Join the chat at https://gitter.im/yi-editor/yi](https://badges.gitter.im/yi-editor/yi.svg)](https://gitter.im/yi-editor/yi?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![Travis](https://travis-ci.org/yi-editor/yi.svg?branch=master)](https://travis-ci.org/yi-editor/yi)
 [![Hackage](https://img.shields.io/hackage/v/yi.svg?maxAge=2592000)](https://hackage.haskell.org/package/yi)
 [![Hackage-Deps](https://img.shields.io/hackage-deps/v/yi.svg?maxAge=2592000)]()
@@ -85,7 +84,7 @@ Our mailing list is [yi-devel][], hosted at Google Groups. Please ask us questio
 
 IRC: #yi@Freenode  Please note that it is rather slow (very slow compared to #haskell), so be prepared to stay for longer than 5 minutes.
 
-Gitter: [yi-editor/yi](https://gitter.im/yi-editor/yi)
+Matrix: #yi:matrix.org
 
 ## Reading material