更新文档

README.md

@@ -1,5 +1,5 @@
 ## zheng
-![Version](https://img.shields.io/badge/version-1.0.0-green.svg)
+[![Version](https://img.shields.io/badge/version-1.0.0-green.svg)](https://github.com/shuzheng/zheng/)
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)](http://opensource.org/licenses/MIT)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://github.com/shuzheng/zheng/pulls)
 [![wiki-1.0.0](https://img.shields.io/badge/zheng-1.0.0-red.svg)](https://github.com/shuzheng/zheng/wiki)