svenfuchs/i18n-active_record — pull request #19 by ahx (2011-11-11 15:07:03+00:00)
Title: Fix README – I18n::Backend::ActiveRecord already includes I18n::Backend::Flatten

I think you don't want to include I18n::Backend::Flatten again, because aleady includes it.

> I18n::Backend::ActiveRecord.included_modules.include?(I18n::Backend::Flatten)
=> true