Merge remote-tracking branch 'origin/master'

README.md

+![logo](https://raw.githubusercontent.com/zlmediakit/ZLMediaKit/master/logo.png)
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 # A lightweight ,high performance and stable stream server and client framework based on C++11.
 
  [![Build Status](https://travis-ci.org/xiongziliang/ZLMediaKit.svg?branch=master)](https://travis-ci.org/xiongziliang/ZLMediaKit)

README_CN.md

+![logo](https://raw.githubusercontent.com/zlmediakit/ZLMediaKit/master/logo.png)
 # 一个基于C++11的高性能运营级流媒体服务框架
  [![Build Status](https://travis-ci.org/xiongziliang/ZLMediaKit.svg?branch=master)](https://travis-ci.org/xiongziliang/ZLMediaKit)