Progress bars

AWESOME SAUCE

![screen shot 2014-04-08 at 17 01 45](https://cloud.githubusercontent.com/assets/3565/2645854/2c5a05ca-bf37-11e3-8164-f649269dc6c8.png)
![screen shot 2014-04-08 at 17 01 18](https://cloud.githubusercontent.com/assets/3565/2645855/2c5b5042-bf37-11e3-9869-9bc76a7b43d8.png)


Resolves #113