[aerogear-dev] Android OAuth2 PR

https://github.com/aerogear/aerogear-android/pull/146 This PR is 1) big and 2) incomplete (https://issues.jboss.org/browse/AGDROID/component/12319553). However, it represents a certain set of functionality and I want to get feedback/cleanup/merge before I continue making it even bigger. I would be EXCITED if someone can review this monster. If it needs to be cut up and submitted piecemeal to make it more digestible I will also take feedback on how to do that. Summers -- Summers Pittman