Instant on boarding with Expo Snack

[wokalski]

Currently there are many obstacles the users need to overcome before they are ready to play with nars. In order to shorten the TTI I'd like to set up an expo snack. In that flow, in order to get started, the users will need to:

1. Go to the expo snack
2. Launch the expo app and scan snack's QR code
3. Clone a starter repo (?)
4. Run yarn && yarn start
5. Insert the IP address of the server in the app on the phone
6. Play with it.

There's one UX concern; how to handle the server updates. The app needs to reconnect to the server if it's changed (aka there will be no "hot reloading"). How to handle that?