adding a test where a controller calls render, only, bypassing roar-rails.
updating CI Gemfile to rails 4.0.0. fixes #44.
require 3.2.13 or higher in CI gemspec. hopefully, this fixes the travis build.
adding ruby 2.0 to travis.
update rake.
Merge branch 'configure-represented-formats' of https://github.com/goldstar/roar-rails
move all decisions into #represents_format?.
rephrasing README, a bit.
Merge branch 'master', remote-tracking branch 'upstream/master'
Add test for supressing the representation for specific formats from the application configuration.