For easy installation, use rcm, which you can install with the following command:
brew tap thoughtbot/formulae
brew install rcm
You can then symlink the utilities in this repo to your ~/bin directory by executing the following command:
$ RCRC="$(pwd)/.rcrc" rcup -v
Remove the symlinks using:
$ RCRC="$(pwd)/.rcrc" rcdn -v
Happy CLI'ing.