Install RVM on Ubtunu

install_rvm.sh

#!/bin/bash

# install necessary packages on ubuntu
sudo apt-get install build-essential bison openssl libreadline6 libreadline6-dev curl zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev
# prevent webkit gem installation problem
# https://github.com/thoughtbot/capybara-webkit/wiki/Installing-Qt-and-compiling-capybara-webkit
sudo apt-get install libqt4-dev libqtwebkit-dev
# install rvm 
# http://beginrescueend.com/ 
bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)