Add necessary libs
$ sudo apt-get install autoconf automake autotools-dev build-essential bison bzip2 curl git libreadline5 libsqlite3-0 sqlite3 libsqlite3-dev libxml2-dev libmysqlclient-dev libreadline-gplv2-dev libruby openssl libssl-dev zlib1g zlib1g-dev zlibc vim libv8-dev nodejs libmysqlclient-dev libcurl3 libcurl3-gnutls libcurl4-openssl-dev
# Add rvm
$ \curl -sSL https://get.rvm.io | bash
# Add rvm initializer in .bashrc
$ echo '[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function' >> ~/.bashrc || source ~/.bashrc
# initializing rvm
$ source ~/.rvm/scripts/rvm