Making export_as_* work with new Google Spreadsheet. #84
Taken from @crm114 's branch.
Bumping up gem version.
Fixing some bugs.
Fixing unit test.
Suppressing warning.
Bringing back File#document_feed_url.
Merging master.
Providing default client ID / client secret for saved_session.
Putting some methods back.
Implementing paging.
Using OAuth in README example.
Adding some method documents.