We'll respond shortly.
If you have seemingly random undefined is not a function in your Capybara Webkit specs, checkout your binding of event handlers. The native bind doesn't like to work in CW, so try Underscore's instead.
Return Object of course
Finally fixes the hamcrest dependency conflict. Roboelctric users BEWARE: See the recent mailing list thread "Setup for non-maven" users if you are going to upgrade.