rewrite modifyplaylist (change playlist name)
rewrite modifyplaylist (change playlist name)

peetahzee/Unofficial-Google-Music-API,dvirtz/gmusicapi,tanhaiwang/gmusicapi,jimyx17/gmusic,TheOpenDevProject/gmusicapi,thebigmunch/gmusicapi,simon-weber/Unofficial-Google-Music-API,simon-weber/gmusicapi,nvbn/Unofficial-Google-Music-API,dvirtz/gmusicapi