This plugin helps you to run Ruby using rbenv.
It assumes that you have the rbenv command installed in /usr/local/bin/rbenv
. Currently tested on OS X.
cd ~/Library/Application\ Support/Sublime\ Text\ 2/Packages/
git clone git://github.com/felipeelias/sublime-text-2-rbenv.git rbenv
Tools
-> Build System
choose RBenvcommand + B