instructions too technical

[jgoldmann]

Hi paperlesspaper,

Thanks for your great work on this project!
I would like to set up a printer connection with my frame, but I seriously struggle with the instructions. While I can handle some command line magic (like cloning the repo, running the python server and editing the .env configuration), there are things that I feel are lacking:

• The field PAPER_ID=<paperId> should have the id of my paperless device as it is displayed in the android app in the devices tab (but without space characters I assume)?
• Where to find the token value for the setting POST_AUTH_VALUE=<token>?

And once I have set those values and run the python server on my local computer, the GUI dialog of my operating system should find the printer? Or is there more to it? Do I need to adjust the IP addresses mentioned in the readme?