We use Scala + Play Framework for backend, React for frontend, and WebSocket to communicate between them.
Besides having JDK 8 and SBT installed, make sure to install the latest version of Node.js and NPM. (i.e., errors regarding react-scripts are mostly due to an old version of NPM.)
After sbt run, it will automatically open http://localhost:3000 in browser.
This contributing guidelines of another open source project well describe how to use Git for collaborative development. We are going to follow their guidelines except for that we don't have release branch yet.
