Plotly chart

I just fixed the few conflicts so I think this is good to go. Note the incoming controller is still commented out so we can safely push to heroku.

The good news is that user growth looks pretty good in addition to usage growth:
![screen shot 2014-10-16 at 11 26 26 pm](https://cloud.githubusercontent.com/assets/2533112/4675213/03642442-558d-11e4-9274-e67e3f843e10.png)

Live at http://keep-your-balance.herokuapp.com w00t!