borismus/oauth2-extensions — pull request #15 by kompiro (2012-09-09 10:46:32+00:00)
Title: save refreshed refresh token to refresh next time

I used this library to connect my service.My service uses doorkeeper(Oauth2 provider for Rails).
Doorkeeper wants to access newer refresh token when access token is expired.
I think it is OAuth2 spec.
So I implemented a hotfix patch.