Install rbenv

install-rbenv

#!/bin/sh

# Check out rbenv into ~/.rbenv.
git clone https://github.com/sstephenson/rbenv.git ~/.rbenv

# Add ~/.rbenv/bin to your $PATH for access to the rbenv command-line utility.
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile

# Add rbenv init to your shell to enable shims and autocompletion.
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile

# Add plugin to install ruby 
git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build

git clone git://github.com/jf/rbenv-gemset.git ~/.rbenv/plugins/rbenv-gemset

git clone git://github.com/carsomyr/rbenv-bundler.git ~/.rbenv/plugins/rbenv-bundler