* Add Chinese language link.
And implete complement the content index with Videos/Podcasts.
* Correct the linkage of videos/podcasts.
* Lowercase the url.
* Correct the link.
* Add Cocos-Creator.
* Add Mod-DB.
* Add Make Games with Python & Pygame in Books.
* Add Chinese language link.
And implete complement the content index with Videos/Podcasts.
* Correct the linkage of videos/podcasts.
* Lowercase the url.
* Correct the link.
* Add Cocos-Creator.
* Add Mod-DB.
* Add Chinese language link.
And implete complement the content index with Videos/Podcasts.
* Correct the linkage of videos/podcasts.
* Lowercase the url.