Added a utility to pull revisions from drive files from Google Drive. Just
need to figure out how to show the diffs for the *.od* files
Made executable, changed out censors, and added git revisionness
drive2vcs.py: Store the versions as their *.fod* versions and
store auth and client tokens outside of the program's code.
drive2vcs.py: forgot to camelcase mimeType
drive2vcs.py: Preserves the descriptions of the gdoc files now.