video walk-thru of getting started

[dckc]

@kbennett2000 is working on this

It depends on a few things...

• [x] https://github.com/agoric-labs/dapp-game-places/issues/16
• [x] https://github.com/agoric-labs/dapp-game-places/issues/13
• [ ] add walkthru to /getting-started/ page

[kbennett2000]

Video Walkthrough here: https://youtu.be/nczDihk8Nvs

[kbennett2000]

Raw file -- https://drive.google.com/file/d/1BW8Q8tuftCQ7feoyKS1X6pS7D7SrNU2g/view?usp=drive_link

[dckc]

fixed in #920