-added method for getting new graph data 'getNewGraphData'(in json forma...

awesome base. I was trying to use it but ran into some issues (see below) which I resolved, and expanded slightly.

issues:
-could not connect authenticate request (issues with the cookies, modified to add "u" seemed to work. 

expansion:
-fitbit seems to have added a new way of getting data in json format "getNewGraphData" so some new information (floors and distance) go through this method. The original method still works (had to update sleep).