dotfiles
Dotfiles Manager:
https://github.com/thoughtbot/rcm
References:
dotfiles
https://medium.com/@webprolific/getting-started-with-dotfiles-43c3602fd789#.vqvq9dgfs
info about bashrc and bash_profile
http://www.joshstaiger.org/archives/2005/07/bash_profile_vs.html
install script how-to
http://lapwinglabs.com/blog/hacker-guide-to-setting-up-your-mac