Adding notes on model

Hey Alex,

I wasn't able to see you demo your final project during the last class, so I had a hard time going through your code base trying to see what the application does. It looks like you successfully implemented Paperclip and Devise, which is absolutely awesome.

I had a great class with you and I hope that you continue using Ruby and Rails. I apologize we haven't passed on any information about GA Studio just yet, but that will hopefully start in the coming weeks. I'm sure that I'll see you around GA soon!

Best,
Brooks