Growl notifications

I use growl notifications for my AngularJS tests with Karma and I'd like to have the same for my node-side jasmine tests. I wrote a Growl reporter which I'd like to integrate into jasmine-node. Growl notifications would be an optional addition to other reports.

I've created a [separate project](https://github.com/AlphaHydrae/jasmine-growl-reporter) with only the reporter which I've included in a similar way to the reports from [jasmine-reporters](https://github.com/larrymyers/jasmine-reporters). I didn't add any tests to jasmine-node itself as my project already has a test suite and I didn't find any tests for the other external reporters. I just wrote the code today so the functionality and test suite might be lacking but that will be improved.