perfectline/validates_existence — pull request #27 by seanpdoyle (2014-04-02 16:43:16+00:00)
Title: include validations in `ActiveModel::Model`

`ActiveRecord::Base` extends `ActiveModel::Model`

Also, added `Gemfile` so that `bundle install` works

FYI: Couldn't get the tests to run locally. `bundle exec rake test` seems to be a no-op with blank output.