Travis [reports](https://travis-ci.org/teampoltergeist/poltergeist/builds/22200291) that this line is failing all over the place:
~~
TypeError: 'undefined' is not an object (evaluating 'response['status']')
    at /home/travis/build/teampoltergeist/poltergeist/lib/capybara/poltergeist/client/compiled/browser.js:97
~~~