parcel 101

I do like https://createapp.dev/ and parcel, but I always forget that it presumes that it's at the root of the server (especially vexing since one of the charms of a lightweight thing like this relative to create-react-app is making a small little thing you can deploy anywhere)

The fix is easy, add a --public-url argument in package.json:

"build-prod": "parcel build src/index.html --public-url ./",