TDD set-up

Hi,

`npm test` launches Karma, which runs all your tests in a browser *(by your preference)*.

![screen shot 2014-01-22 at 20 56 20](https://f.cloud.github.com/assets/95191/1978107/4c809e1e-839f-11e3-86db-9510e3fcf09f.png)

![screen shot 2014-01-22 at 20 55 44](https://f.cloud.github.com/assets/95191/1978097/35857f54-839f-11e3-928e-40b2406493d0.png)

Is there anything else I can help you with?