Test against the newest JRuby
Test against the newest rbx
Test against 2.1.0
Update ActiveRecord edge to use Minitest rather than TestUnit, and use a more recent version of RSpec without the TestUnit dependencies.  Update Travis config to exclude JRuby / ActiveRecord edge until ActiveRecord JDBC driver issue is resolved
Merge pull request #492 from petergoldstein/feature/fix_specs_2013_12

Get specs green