Adds JWT-based auth with refresh tokens

README.md

@@ -2,6 +2,12 @@
 
 REST API to support a community scavenger hunt app.
 
+## Environment variables
+* `DB_PASSWORD` Password for the database 
+* `DB_URL` JDBC URL for the database
+* `DB_USER` Username for the database
+* `JWT_SECRET` Secret pass for the JWT
+
 ## TODO:
 ### User Endpoints
 * list teams for hunt GET /hunt/{id}/team