Please pull my minor change to allow for running individual tests.

Hi, I've made a change to your current repo. A couple months ago I made a change to Jasmine that we have been using at my company to allow running single tests. It works and has not been a barrier in any way to the efficient use of Jasmine in browser-less javascript testing as part of a continuous integration environment. Only a good modification as far as I can tell.

-AslanB
http://www.aslanb.com
http://www.zynxhealth.com