add PayPal support (OAuth 2.0)
try to bring some backward compatibility
implement hasBeenCancelled() in Google2Client
implement hasBeenCancelled() in Google2Client
Merge pull request #22 from July-G/master

Implement hasBeenCancelled() in Google2Client
scope for Github
v1.5 now handles Ajax requests and infinite loop on failed authent
update README
fix README
fix Javadoc
refactor raw data
optimize serialization for CAS when big objects
update profile url to HTTPS
Merge pull request #2 from leleuj/master

Pull from upstream