Presentation - Multiple vertical clustered bar quick test

Mostly for Dan's presentation

They look like this:
![screen shot 2014-09-04 at 2 53 48 pm](https://cloud.githubusercontent.com/assets/8551049/4157373/1e1ef2ba-347e-11e4-97b1-7448c97d0d1e.png)
![screen shot 2014-09-04 at 2 54 01 pm](https://cloud.githubusercontent.com/assets/8551049/4157374/21610486-347e-11e4-9192-59a58054cb9b.png)


yUnitLabel