Use chrome instead of PhantomJS

Hi, I am a maintainer of [impress.js](http://github.com/impress/impress.js) and I was looking for a way to run the [3D transform integration tests](https://github.com/impress/impress.js/tree/a1d6475bd5f31b46586ae73a5d6e995d3ca4732b/test) in Google Chrome. The problem is that `gulp-qunit` uses PhantomJS and it doesn't have support for 3D transform, see [here](https://github.com/impress/impress.js/issues/560#issuecomment-220763103) for what I have tried so far.

Is there any chances this plugin can use Chrome instead of PhantomJS, assuming that Chrome has a proper 3D transform support? Is anyone aware of anything that blocks it from being done in this project?

Ping @jonkemp