curl -sSL https://get.rvm.io | bash -s stable --rails
source ~/.rvm/scripts/rvm
rvm user gemsets
type rvm | head -n 1
rvm install 2.1.5
rvm use 2.1.5
gem install rails
If you run into issues not being able to locate gems, set GEM_HOME="$HOME/.gems"
rails -v
gem install bundler