Ruby 1.9.3 support
Add in Ruby 1.9.3
Merge pull request #4 from Sutto/ruby-1.9.3-support

Ruby 1.9.3 support
Headless testing support.
Fixes to installing Chrome
xvfb fixes.
More chromedriver fixes.
Fixed installation of google-chrome-stable
Bumping version of chromedriver.
Testing github stuff.
More github debugging.
Use beta version 0.2-beta1 of the buildbox agent.
Use the correct version syntax.
Link up buildbox-data
Added heroku to the list of known_hosts
Added a note to the readme.
Updated branch handling.
Add OpenJDK Headless + PIP / awscli (for artifact uploads)
Add SBT, Scala and tweaks.