Winning with Codeception and PhantomJS (And some grunt shortcuts as well).
For the background story on this repo, please checkout the post created by Darren Nolan.
To use, simply composer install, npm install and away you go. Take some pointers from the blog post about URL location setup for your acceptance.suite.yml file.
Starts us by getting grunt, PhantomJS and Codeception installed, and writing a basic javascript page acceptance test.