To spin this up, first you'll have to supply twitter and google maps API keys. You can get your twitter API keys here (you'll have to create an app to attach keys to first, but it's free), and your google maps API keys here.
Once you have those, edit ./SECRETS with those values.
To get started, start up the front end
npm installnpm run start
and in another terminal, start up the server
cd server/npm installnode ./index.js
This should serve the frontend on port 3000 and the server at port 3001 - if you override that, you'll have to update where the frontend points its websocked connection to.
Accompanying slides: https://docs.google.com/presentation/d/159RCJVy4Tvt5OgiGQWCSKpLS4R1xOdMoyyd8LXNYfeY