wazery/ratyrate — pull request #51 by joeyates (2014-11-28 08:51:19+00:00)
Title: Fix error when reflecting on associations.

* `:through` values should be symbols (see
https://github.com/rails/rails/blob/4-1-stable/activerecord/lib/active_record/reflection.rb#L25),
* this was causing errors in ActiveAdmin.
* fixes #46.