Add CONTRIBUTING.md
Add CONTRIBUTING.md

Arro/dotfiles-1,jhgaylor/dotfiles-zeno,marcodejongh/dotfiles,zenorocha/dotfiles,Arro/dotfiles-1,eduardolundgren/dotfiles,eduardolundgren/dotfiles,jhgaylor/dotfiles-zeno,marcodejongh/dotfiles,zenorocha/dotfiles