Responders dependency

[dfreerksen]

Responders should be a dependency if it is being used. Don't rely on the application to add a dependency that is required by the gem.

Without adding this gem as a dependency and without it being part of your application, you will get an error saying

The controller-level `respond_to' feature has been extracted to the `responders` gem. Add it to your Gemfile to continue using this feature: gem 'responders', '~> 2.0' Consult the Rails upgrade guide for details.

[emilioforrer]

Thanks for your contribution :)

The problem to add this dependency is that that it make the gem version incompatible with rails 3.2, but i guess it's time to release a major version (2.0.0) for rails 4.2+.

Sorry for the delay in my response. Thanks for the merge request, you will see the change in version 2.