Google OAuth 2 - does not work

I did this before realizing [Google DOES NOT support Play Music](https://developers.google.com/apis-explorer) with OAuth 2.0 despite Client Login being deprecated last year...  Based on some research I did, the [music manager app uses OAuth 2.0](https://github.com/simon-weber/Unofficial-Google-Music-API/issues/48) but the website still only supports Client Login.

I implemented this using Google's official OAuth API for node [google-apis-node-client](https://github.com/google/google-api-nodejs-client/).  I put it here thinking it would be helpful since Google has deprecated Client Login and its retirement could be coming [very soon](https://developers.google.com/accounts/docs/AuthForInstalledApps).  Added bonus people won't be exposing their master Google password to use this.