MySQL/Loopback back-end with authenticated REST API.
#Back-End (from root)
run node .
open localhost:3000
interact with API through localhost:3000/explorer
first-time setup: https://medium.freecodecamp.org/build-restful-api-with-authentication-under-5-minutes-using-loopback-by-expressjs-no-programming-31231b8472ca