Update README.md
Raise error if Lotus::Controller::Configuration#format doesn't receive the proper argument. Let Lotus::Action::Mime#accept to work with registered mime types
[ci skip] Documented new mime types features in README
Merge pull request #19 from fgo/patch-1

Update README.md
Implemented private method for default_content_type, so that an action can decouple from Action::Mime::DEFAULT_CONTENT_TYPE. This is declared as a private api for now.
[ci skip] Remove a postponed feature from README
[ci skip] CHANGELOG
Let to specify a default format for all the requests that aren't strict about the requested Mime type (eg. '*/*').
[ci skip] CHANGELOG
Made Lotus::Action#content_type public
Refactoring for Lotus::Action#format= use Utils::Kernel.
[ci skip] CHANGELOG
[ci skip] CHANGELOG
enable rubinius testing
Merge pull request #20 from Benny1992/master

Enable Rubinius testing