I believe this link will answer your questions. You will need Selenium 2.28.0, and PhantomJS 1.8. I have tested this, and it works as advertised, although my tests were precursory. Note that you need to download the Selenium zip file to get the jar which contains the bindings. The Maven repo does not yet include it.
http://ivandemarino.me/2012/12/04/Finally-GhostDriver-1-0-0/