Add Chinese language edition link (#117)

* Add Chinese language link.
And implete complement the content index with Videos/Podcasts.

* Correct the linkage of videos/podcasts.

* Lowercase the url.

README.md

@@ -1,5 +1,6 @@
 [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/awesome)
 [![Build Status](https://travis-ci.org/ellisonleao/magictools.svg?branch=master)](https://travis-ci.org/ellisonleao/magictools)
+[![badge-translation-chinese](https://img.shields.io/badge/Translation-chinese-lightgrey.svg)](https://github.com/HaitaoBio/magictools-ch)
 
 ![commercial](/img/commercial.png) = Paid,
 ![limited free](/img/limited.png) = Limited Free,
@@ -33,6 +34,7 @@ A list of game development resources to make **magic** happen. Created by awesom
   - [Blogs and Portals](#blogs-and-portals)
   - [Books](#books)
   - [Magazines](#magazines)
+  - [Videos/Podcasts](#videospodcasts)
   - [Game Jams](#game-jams)
   - [Project Management](#project-management)
   - [Complete Game Sources](#complete-game-sources)