Node example

Please read the documentation here: https://docs.passwordless.dev

1. Get your own API keys here: https://beta.passwordless.dev/create-account
2. Replace "YOUR_API_KEY" and YOUR_API_SECRET with your own ApiKey / secret
3. run npm install and start app with node app.js.

Try online: You can test this demo live at https://demo-backend.passwordless.dev/.