(refactor) Modify all res.send to res.json to make all JSON data formatted
(refactor) Modify return after res.status on getNearby missing query string
(cleanup) Clarify comments about ensureIndex to make sure it's run for every instance of MongoDB
(cleanup) Log req.query to console instead of non-existent req.body on GET
(test) Successfully test GET on /staches route for nearby geolocation queries