New: Adds support for the `jasmine` env (fixes #1176)

As an avid user of [jasmine](http://jasmine.github.io/) for testing my [angular](http://angularjs.org) apps, specifically with [karma](http://karma-runner.github.io), this pull request adds support for defining a `jasmine` environment. This globals defined cover both 1.3 and 2.0.