parse a scene.name message

def scene_name(frames):
        """parse a scene.name message"""
        # "scene.name" <scene_id> <config>
        reader = MessageReader(frames)
        results = reader.string("command").uint32("scene_id").string("name").assert_end().get()
        if results.command != "scene.name":
            raise MessageParserError("Command is not 'scene.name'")
        return (results.scene_id, results.name)