Update phantomjs or replace with Electron | Object.defineProperty behavior

[neetjn]

Due to the changes in issue #30, we can no longer properly test events with options due to phantomjs's incorrect behavior of Object.defineProperty noted here ariya/phantomjs#14310.

We can either wait until a new version of phantomjs roles out and get's added to the npm package phantomjs-prebuilt, or look to moving to Electron or headless chrome.

[neetjn]

I've had to make a hot-fix due to an issue with the latest version of phantomjs not being able to process angular.js 1.5+. Our test cases now use chromium in headless mode.