added karma as my test runner since it's a great tool for browser testing, along with karma-browserify to be able to test modules.  it's a pretty crazy setup with karma providing a proxy to the server running racer (hardcoded to localhost:5000) so that the model running in PhantomJS/Chrome/whatever will be an actual racer model instance that can now be passed into views/controllers/etc.. Mocking/stubbing out everything that the racer model does seemed difficult, so I had to resort to this setup..