update readme, add qq group.

@@ -8,6 +8,7 @@ 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
 下载发布版(国内阿里云镜像): 
 [Centos6-x86_64](http://www.ossrs.net/srs.release/releases/files/SRS-CentOS6-x86_64-1.0.0.zip) 
 其他[more...](http://www.ossrs.net/srs.release/releases/)<br/>
+QQ群: [365936885, by wenjie](http://jq.qq.com/?_wv=1027&k=SvTiJl) <br/>
 同类产品：[BLS](https://github.com/wenjiegit/Bull-Live-Server)/[BLE](https://github.com/wenjiegit/Bull-Live-Encoder), [NGINX-RTMP](https://github.com/arut/nginx-rtmp-module), [CRTMPD](http://www.rtmpd.com/), [RED5](http://www.red5.org/), [WOWZA](http://www.wowza.com/), [FMS/AMS](http://www.adobe.com/products/adobe-media-server-standard.html)
 
 获得源码(github): [https://github.com/winlinvip/simple-rtmp-server](https://github.com/winlinvip/simple-rtmp-server) [GIT使用方法](https://github.com/winlinvip/simple-rtmp-server/wiki/v1_CN_Git)