lncd/OAuth2 — pull request #2 by dhorrigan (2012-12-19 21:14:05+00:00)
Title: Added User Credentials and Refresh Token Grants

Added the user_credentials and refresh_token grants. Fixed expires_in so it is inline with the spec, but added expires for the old usage of expires_in. Made redirect_uri in oauth_sessions ALLOW NULL since user_credential grants don't have a redirect.