gregbell/active_admin — pull request #2978 by oliverklee (2014-03-03 11:21:23+00:00)
Title: Re-add Ruby 2.0 to .travis.yml.

The change to Ruby 2.1 in .travis.yml accidentaly dropped the tests in
Ruby 2.0. This change re-adds it so that now Ruby 1.9.3, 2.0.0 and 2.1.0
are tested.