docs: add discord link

QingWei-Li · web-flow · commit fea80b508cbf · 2018-01-23T13:10:47.000+08:00
diff --git a/README.md b/README.md
@@ -11,6 +11,7 @@
 <p align="center">
   <a href="https://travis-ci.org/QingWei-Li/docsify"><img alt="Travis Status" src="https://img.shields.io/travis/QingWei-Li/docsify/master.svg?style=flat-square"></a>
   <a href="https://www.npmjs.com/package/docsify"><img alt="npm" src="https://img.shields.io/npm/v/docsify.svg?style=flat-square"></a>
+  <a href="https://discord.gg/Yu2vxQ5"><img alt="Discord" src="https://img.shields.io/discord/405225830701334550.svg?style=flat-square"></a>
   <a href="https://github.com/QingWei-Li/donate"><img alt="donate" src="https://img.shields.io/badge/%24-donate-ff69b4.svg?style=flat-square"></a>
 </p>
 
