in relayr cloud: set up a project and add the device for the scale/rfid reader
in terminal: npm install
in background-script.js: fill in your project id, your device id, the expected weights of the beer brands, the names of the beer brands, and the expected rfid values for the beer brands. save.
back in terminal: npm run build:js npm run start
in the browser: go to http://localhost:3000/dist/webpage.html