[doc] README

README.md

@@ -4,12 +4,12 @@
 [![Release](https://img.shields.io/github/tag/q191201771/lal.svg?label=release)](https://github.com/q191201771/lal/releases)
 [![TravisCI](https://www.travis-ci.org/q191201771/lal.svg?branch=master)](https://www.travis-ci.org/q191201771/lal)
 [![goreportcard](https://goreportcard.com/badge/github.com/q191201771/lal)](https://goreportcard.com/report/github.com/q191201771/lal)
-[![wechat](https://img.shields.io/:微信-q191201771-blue.svg)](https://pengrl.com/images/yoko_vx.jpeg)
+![wechat](https://img.shields.io/:微信-q191201771-blue.svg)
 ![qqgroup](https://img.shields.io/:QQ群-1090510973-blue.svg)
 
 [中文文档](https://pengrl.com/lal/#/)
 
-LAL is a live stream broadcast server written in Go. It's sort of like `nginx-rtmp-module`, but easier to use and with more features, e.g. RTMP/RTSP/HLS/HTTP[S]-FLV/HTTP-TS, H264/H265/AAC, relay, cluster, record, HTTP API/Notify, GOP cache.
+LAL is a audio/video live streaming broadcast server written in Go. It's sort of like `nginx-rtmp-module`, but easier to use and with more features, e.g RTMP, RTSP(RTP/RTCP), HLS, HTTP[S]-FLV/HTTP-TS, WebSocket-FLV/TS, H264/H265/AAC, relay, cluster, record, HTTP API/Notify, GOP cache.
 
 And [more than a server, act as package and client](https://github.com/q191201771/lal#more-than-a-server-act-as-package-and-client)