Update README.md

README.md

@@ -3,7 +3,7 @@
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://github.com/shuzheng/zheng/pulls)
 [![GitHub forks](https://img.shields.io/github/forks/shuzheng/zheng.svg?style=social&label=Fork)](https://github.com/shuzheng/zheng)
 
-交流QQ群：133107819
+交流QQ群：133107819 (群内含各种工具和文档下载)
 
 文档：[https://shuzheng.gitbooks.io/zheng/content/](https://shuzheng.gitbooks.io/zheng/content/ "文档")
 
@@ -243,4 +243,4 @@ zheng-admin、zheng-common => zheng-oss、zheng-api => zheng-upms => 其他
 
 ## 许可证
 
-[MIT](http://opensource.org/licenses/MIT "MIT")
+[MIT](http://opensource.org/licenses/MIT "MIT")