TO DO

• https://www.cs.cmu.edu/~15131/f16/topics/git/getting-started/
• http://www.cheat-sheets.org/saved-copy/davechild_linux-command-line.pdf
• https://www.cs.cmu.edu/~15131/f16/topics/vim/vim-cheatsheet.pdf
• http://rogerdudler.github.io/git-guide/