references
[1]
https://www.atlassian.com/git/workflows?_escaped_fragment_=workflow-gitflow#!
workflow-gitflow
[2]
http://git-scm.com/book/en/Git-Branching-Basic-Branching-and-Merging
Learn more!
1.
http://git-scm.com/doc
2.
http://readwrite.com/2013/09/30/understanding-github-a-journey-for-beginners-part-1#awesm=~oAVDlqoVghXIkK
3.
https://help.github.com/
4.
http://ftp.newartisans.com/pub/git.from.bottom.up.pdf