Description of revoke configuration options

Configuration option = Default value	Description
[revoke]
caching = True	(BoolOpt) Toggle for revocation event caching. This has no effect unless global caching is enabled.
driver = keystone.contrib.revoke.backends.kvs.Revoke	(StrOpt) An implementation of the backend for persisting revocation events.
expiration_buffer = 1800	(IntOpt) This value (calculated in seconds) is added to token expiration before a revocation event may be removed from the backend.