Added hal-browser and simple index page for CollectionResource.

Based on code from #61 added simple CollectionResource index page + hal-browser ( https://github.com/mikekelly/hal-browser )

Now, navigating to http://localhost:8080/edda/ user will be presented with api browser.

![image](https://f.cloud.github.com/assets/686820/1795643/d30eb010-6a2c-11e3-8183-6a1c5845b2b4.png)