Fixes typo in readme
Removes all code to install ruby 2.0 package.
Updated to install ruby 1.9.1 from the built in packages.
Rewrite of the ruby installation.

Version up to 3.1 used a custom ruby package built from the saucy repo to install ruby 2.0
Module now uses the puppetlabs-ruby module to install the latest version of ruby depending on which repos are available. ruby gems is managed by rubygems-update
Updates read me