(cleanup) Correct POST to GET on a test, remove redundant test
(cleanup) Make GET request to /users respond with 200
(feat) Add initial route test for /relationships for when user discovers a stache
(cleanup) Remove signup since only doing Facebook OAuth for now
(cleanup) Remove comments about auth scheme
(cleanup) Make test work for /discoveries with sid and fbid
(feat) Add discoveries route, discovery model and controller, and stubbed db helpers for adding user and stache to respective collections