Merge pull request #1673 from cweijan/patch-2

Better readme.

Author: sidorares

README.md

@@ -8,7 +8,7 @@
 [![Windows Build][appveyor-image]][appveyor-url]
 [![License][license-image]][license-url]  
 
-[简体中文 Simplified Chinese](./documentation_zh-cn/)
+English | [简体中文](./documentation_zh-cn/)
 
 > MySQL client for Node.js with focus on performance. Supports prepared statements, non-utf8 encodings, binary log protocol, compression, ssl [much more](https://github.com/sidorares/node-mysql2/tree/master/documentation)
 

documentation_zh-cn/README.md

@@ -8,6 +8,8 @@
 [![Windows Build][appveyor-image]][appveyor-url]
 [![License][license-image]][license-url]
 
+[English](../README.md) | 简体中文
+
 > 适用于Node.js的MySQL客户端，专注于性能优化。支持SQL预处理、非UTF-8编码支持、二进制文件编码支持、压缩和SSL等等 [查看更多](https://github.com/sidorares/node-mysql2/tree/master/documentation)
 
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