When Git is started, it is always on a branch. Type 'git branch' to determine which branch to use at a given time. You can only be set to one branch at a time.

git pull origin develop --- 
using "Git", instruct it to "Pull" from "Origin" the "Develop" branch.  The pull will come down to the current branch.

RVM Ruby Version Manager manages different instances of Ruby environments in isolated "gemsets". rvm gemset create rvm gemset list rvm gemset use rvm use 1.9.2, or rvm use --default 1.9.2 Using Git Flow: git flow feature start "name" git add . git commit git flow feature finish "name"