Merge pull request #153 from jasnow/master

Upgraded to ruby 2.1.3 and multiple gems by Gemfile.lock rebuild.
following an upgrade to the latest version of Ruby, my build environment was completely hosed. Had to tweak things here and there but it appears nobody should have an issue now. Hadnt heard anyone complain though so maybe we caught it before it became a problem? Dunno
Resolves #152