Mousetrap-rails — gem that provides keyboard bindings for web applications — has been updated to v0.0.10.
The most important change is that it is now compatible with Ruby on Rails 4 and works with Turbolinks gem as well.
With this gem you can add keyboard shortcut to any action on your web app. For example, use keyboard to navigate your links via simpe HTML5 data attribute.
You can find more examples on gem page on GitHub.