Update README.md

Add Chinese(Simplified) Translation.

Author: Zhangjd

README.md

@@ -22,6 +22,7 @@
     - [Mixins](#mixins)
     - [Extend directive](#extend-directive)
     - [Nested selectors](#nested-selectors)
+  1. [Translation](#translation)
 
 ## Terminology
 
@@ -277,3 +278,9 @@ When selectors become this long, you're likely writing CSS that is:
 Again: **never nest ID selectors!**
 
 If you must use an ID selector in the first place (and you should really try not to), they should never be nested. If you find yourself doing this, you need to revisit your markup, or figure out why such strong specificity is needed. If you are writing well formed HTML and CSS, you should **never** need to do this.
+
+## Translation
+
+  This style guide is also available in other languages:
+  
+  - ![cn](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/China.png) **Chinese (Simplified)**: [Zhangjd/css-style-guide](https://github.com/Zhangjd/css-style-guide)