Running demo throws error

[rmx90210]

Hello team Koop! Thank you for this awesome project :)

I cloned the repo and am trying to run the demo per the README. So I did:

git clone <url>
cd koop
npm run demo

and I'm getting this error:

> koop@1.0.0 demo
> node demo/index.js

node:internal/modules/cjs/loader:1252
  throw err;
  ^

Error: Cannot find module '@koopjs/koop-core'

I think it's missing the npm install step. I can submit a PR!