https://github.com/lenmorld/react_workshop/raw/master/React%20workshop.pdf

$ npm checkout dev 	# to follow workshop
or
$ npm checkout master		# to see latest working code

$ npm install
$ npm run dev

Go to localhost:4001

webpack-dev-server for React runs on 4001, which enables hot-reloading

backend node server runs on 4000

$ npm run build
$ npm start

Go to <server_name>:4000

builds bundle.js for production

backend node server runs on 4000