Friendly suggestions

Ok, so I saw @datachomp open this project up.  I took a look, and I thought I'd throw in a few suggestions.  

I did this while watching tv, so don't trust everything... my attention was spread out.  

Ok, so I'm getting fancy here, right?  I'm essentially creating a hash of key value pairs that already exist in the params hash... then passing them to a method for updating.

This ```params``` thing... it's really funny to see how Rails has fumbled this thing around... first they used to do the ```agenda.update params[:agenda]``` thing, then **uh oh now our Github repo has been hacked cause someone put a key in params[:agenda].** Then they had everybody flip to the "attr_accessible" stuff, and in Rails 4 they're doing it a different way.  So...

I totally agree **in spirit** with the ``Agenda.update([big list of data])``` idea, at least until the thought leaders finally come to a consensus on the **one true way that's not simple**.  Until then, just make a simple hash and use the simple method to update the object. 

```update_attributes``` will save you the left -> right coding, and it still runs through validations and all of that.