Expand the Travis build matrix to run against multiple versions of ActiveRecord
Expand the default rake task to run specs against MySQL, Postgresql, and Sqlite
Migration generation that works with ActiveRecord >= 3.0
Bring back attribute accessible so we can bring back ActiveRecord 3.0 compatibility
We need to use set_primary_key for ActiveRecord < 3.2
This still plays nice with DJ 3.0
Merge pull request #49 from collectiveidea/merge-development

Merge development