3. You can start off with the Google's sign in button, but you need your own `data-onsuccess` callback. You can also adjust the `data-scope` per button to include more stuff.
3. You can start off with the Google's sign in button, but you need your own `data-onsuccess` callback. You can also adjust the `data-scope` per button to include more stuff. Scopes are defined at https://developers.google.com/identity/protocols/oauth2/scopes