Fix testsuite for rails 2.3
Subject has_many working, fixes #82
Tests working, new version
Yard doc cleanup
Little cleanup for gemspec and version
Adding license to gemspec, fixes #77
Removing extraneous files from dummy
Ignore dummy dirs
Renamed `role_objects` internal method, fixes #69
Date shouldn't be hard coded in gemspec

This caused the 0.12.1 release to have a 2010 date, even though it was released
in 2013.  It causes the sorts of problems like #54 where people don't think
we've released anything.
Adding TravisCI
README moved to markdown
Adding CodeClimate
Adding LICENSE, re #77
Adding CONTRIBUTING
`protect_global_roles` default to true, fixes #55
Gemspec tweaks
README makeover