Bad Credentials

[moejoe95]

Hi,
First off all, thank you for your work here.

I think Spotify deprecated username/password authentication, see here.

As a workaround (can be looked up in the linked isssue) I was able to login via a credential.json file. Maybe this could be mentioned in the readme. I am also happy to assist with a PR.

Cheers,
Moejoe

[Seji64]

Thanks for the hint! I added some basic instructions and set the parameters for spotify to deprecated. Not really a fix, but a workaround.