1. http://www.oxxostudio.tw/articles/201502/gitbook.html
2. http://blog.caesarchi.com/2014/05/gitbook.html
3. http://kingofamani.gitbooks.io/git-teach/content/chapter_6_gitbook/chapter_6_gitbookgitbook2.html
4.http://www.codedata.com.tw/social-coding/gitbook-self-publishing/
