Merge pull request #2 from SeiferTim/master

Added event increment function for GPS Events.
Removed reference to Google Drive

Removed the Reference to Google Drove. It is meant to be used for the
play state saving, but as that isn't implemented in the lib yet, it can
be safely removed. Will add again later, in the same manner as IAP (with
a <set name /> in the project.xml)
Working on Flurry