Change some words from English to Chinese

README.md

@@ -14,14 +14,14 @@ For an detailed introduction to HVML, please refer to the article (10% complete)
 
 - [HVML, a Programable Markup Language](en/an-introduction-to-hvml-en.md)
 
-## Documents in Chinese
+## 中文文档
 
-### Introducation
+### 入门
 
 - [漫谈 HVML：它的由来和未来](zh/brief-introduction-to-hvml-zh.md)
 - [用 HVML 写一个计算器](zh/writing-a-calculator-by-using-hvml-step-by-step.md)
 
-### Specifications
+### 规范
 
 当前版本：
 
@@ -32,7 +32,7 @@ For an detailed introduction to HVML, please refer to the article (10% complete)
 
 - [HVML 规范（V0.9）](zh/hvml-spec-v0.9-zh.md)
 
-### Designs
+### 设计
 
 - [HVML 解释器的设计：一种数据驱动的动态标记语言的解释器实现](interpreter/zh.md)
 - [基于 HVML 的远程应用：一种支持远程应用的方法及装置](cloudapp/zh.md)