inspired by:
Nick Plekhanov's dotfiles - https://github.com/nicksp/dotfiles
Mathias Bynens's dotfiles - https://github.com/mathiasbynens/dotfiles
Zach Holman's dotfiles - https://github.com/holman/dotfiles
Phil PluckThün's dotfiels - https://github.com/philpl/dotfiles
Ben Alman's dotfiles - https://github.com/cowboy/dotfiles