Show contribution details

It closes #50.

![screen shot 2014-07-31 at 12 59 16 pm](https://cloud.githubusercontent.com/assets/230476/3767479/bfa2fedc-18cd-11e4-90cc-227c67fe3ef9.png)

If we have a name ending in "s", it would combine with it forming "Fergus's contribution to" here.