Spotify API

POST https://bwspotify.herokuapp.com/api/favorites

- Add a favorite to the database
-  user_id and spotify_id requires
- ex. {
    "spotify_id": "2374M0fQpWi3dLnB54qaLX",
	    "user_id": 1
	    }   

GET https://bwspotify.herokuapp.com/api/favorites/:id

- Get a list of current users favorites
- must pass the user id in the url

PUT https://bwspotify.herokuapp.com/api/favorites/:id

- Change a favorite track (not really needed Its just for my MVP)
- user_id and spotify_id required
- must pass the track id in the url

DELETE https://bwspotify.herokuapp.com/api/favorites/:id

- deletes a track from favorites
- must pass track id in the url

POST https://bwspotify.herokuapp.com/api/auth/register

- adds a user to the database
- username, email, password required
- sends back token and user data

POST https://bwspotify.herokuapp.com/api/auth/login

- sends back token
- username and password required

GET https://bwspotify.herokuapp.com/api/tracks/:search

- gets a list of tracks based of users search params

GET https://bwspotify.herokuapp.com/api/tracks/:id/single

- gets data for a specific track
- must pass the spotify id in the url

POST https://bwspotify.herokuapp.com/api/tracks/recover

- gets a list of tracks 
- must provide an array of spotify ids in the form of...
{
   "ids": ["2374M0fQpWi3dLnB54qaLX", "1irAliF0T8sLIOPJp6n7rU"]
}
- no limit to amount of ids