Get JRuby running green on this branch
Get JRuby green, run Travis on this branch
Merge pull request #56 from petergoldstein/feature/jruby_and_travis_in_mongoid_3_0

JRuby compatibility and Travis integration for existing Mongoid 3.0 branch
Merge branch 'mongoid-3.0'

* mongoid-3.0:
  Get JRuby green, run Travis on this branch
  Get JRuby running green on this branch