PhantomJS release

[unscrum]

Is there any way you could set the PhantomJS package to an exact version instead of ~0.9.0? There was an issue this morning where phantomJS had updated prior to the windows binary being ready, and our CI environment, (*along with many others) was brought down. see Medium/phantomjs#131

[vojtajina]

Sure, I can set it to exact version, but I'm not sure if it's gonna help. I will get an issue everytime a new version of PhantomJS is released... ;-)

[dignifiedquire]

Ref #56 and #70