Fixed broken opentok.Client.add_archive_stream, opentok.Client.remove_archive_stream, opentok.Client.add_broadcast_stream and opentok.Client.remove_broadcast_stream methods and tests
Fixed opentok.Endpoints.get_archive_stream and opentok.Endpoints.get_broadcast_stream methods
opentok.Client.add_archive_stream
,opentok.Client.remove_archive_stream
,opentok.Client.add_broadcast_stream
andopentok.Client.remove_broadcast_stream
methods and testsopentok.Endpoints.get_archive_stream
andopentok.Endpoints.get_broadcast_stream
methods