added prompt.py, since I forget to pull the import every time. not mine; attribution in the code.
added prompt.py, since I forget to pull the import every time. not mine; attribution in the code.

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