Updated to work with jasmine-2.0

Although I haven't updated the project to `Jasmine 2.0`, this change is backwards compatible. I chose not to update the project to `2.0` because it involves updating many of the tests and the `grunt-jasmine-node` project has not "officially" added support for it yet (although it's available via some forks/branches).

Anyway, the tests still all pass on this project and works on the project that I'm using `Jasmine 2.0` on so I think it's good to go.

Just want to run it by you @FungusHumungus incase I'm missing anything.

Once this is merged @FungusHumungus you will have to increment the package version and tag a new release.