Good luck with trying to automate iOS platform with JS. By the time QA gets proficient with JS, well you wouldn't have to be QA anymore. There is plenty of us out there that are familiar with Selenium which in turns means you know Java to some extent. I have found a way to automate iOS using complete open source with Java Libraries.
I put up a video on it:
http://www.vimeo.com/21999946
I will will be putting up more in depth video shortly.
And since its Java it works perfectly with Junit, ANT, Maven in any CI environment.