add badage

 #Simple-RTMP-Server
 
+[![CircleCI](https://circleci.com/gh/ossrs/srs/tree/2.0release.svg?style=svg)](https://circleci.com/gh/ossrs/srs/tree/2.0release)
+[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/ossrs/srs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+
 SRS/2.0, [ZhouGuowen][release2]
 
 [![Donation](https://www.paypalobjects.com/webstatic/en_US/btn/btn_donate_92x26.png)](http://www.ossrs.net/srs.release/donation/index.html)
 [![Paypal](https://www.paypalobjects.com/webstatic/en_US/btn/btn_donate_pp_142x27.png)](http://www.ossrs.net/srs.release/donation/paypal.html)
-[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/ossrs/srs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
 [![LinkedIn](http://s.c.lnkd.licdn.com/scds/common/u/img/webpromo/btn_liprofile_blue_80x15.png)](http://cn.linkedin.com/in/winlinvip)
 
 SRS定位是运营级的互联网直播服务器集群，追求更好的概念完整性和最简单实现的代码。<br/>