Fork of https://code.google.com/p/gtm-oauth2/:

svn checkout http://gtm-oauth2.googlecode.com/svn/trunk/ gtm-oauth2-read-only
r117
Copyright (c) Google Inc.
Apache License 2.0

Also includes HTTPFetcher from http://gtm-http-fetcher.googlecode.com at r130.
Same license and copyright.

Also includes SBJSON:
https://github.com/stig/json-framework.git/tags/v2.3.2/Classes
Copyright (C) 2007-2013 Stig Brautaset.
BSD-style license.