Rails: rvm
Ruby Version Manager
The Ruby Version Manger, rvm, allows you to ensure that you are using a consistent version of Ruby and Rails across multiple systems.
Installing RVM on Mac
Follow the instructions at https://rvm.io/
You may need to install gpg first, which is best installed via homebrew.
Learning about rvm
- http://sirupsen.com/get-started-right-with-rvm/