Install RVM instead of Installing Ruby.
http://rubysource.com/installing-ruby-with-rvm-on-ubuntu/
bash < <(curl -sk https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)
echo '[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"' >> ~/.bashrc
source ~/.bashrc
