add link for 996.icu

Author: binarywang

readme.md

@@ -1,5 +1,6 @@
 ## WxJava - 微信开发 Java SDK（开发工具包）
 
+[![996.icu](https://img.shields.io/badge/link-996.icu-red.svg)](https://996.icu)
 [![码云Gitee](https://gitee.com/binary/weixin-java-tools/badge/star.svg?theme=blue)](https://gitee.com/binary/weixin-java-tools)
 [![Github](http://github-svg-buttons.herokuapp.com/star.svg?user=Wechat-Group&repo=WxJava&style=flat&background=1081C1)](https://github.com/Wechat-Group/WxJava)
 [![GitHub release](https://img.shields.io/github/release/Wechat-Group/WxJava.svg)](https://github.com/Wechat-Group/WxJava/releases)