Local browser test

Set up local browser testem with [testem](https://github.com/airportyh/testem).
Now you can bind multiple browser to tested as test slaves.

Run test with
```
$ npm install -g testem
$ testem
```

Point browsers to ```http://localhost:7357``` and they are captured as test slaves.
Any test result can now be see/compared by the console.

![screen shot](https://raw.github.com/airportyh/testem/master/images/green.png)

Or simply open ```browsertest/jasmine.runner.html``` with a browser