Removes unnecessary deviceIds parameter from request to transfer playback (#154)

Author: philnash

src/spotify-web-api.js

@@ -1689,6 +1689,7 @@ SpotifyWebApi.prototype = {
       })
       .build();
 
+    delete options.deviceIds;
     this._addAccessToken(request, this.getAccessToken());
     this._addBodyParameters(request, options);
 

test/spotify-web-api.js

@@ -1306,8 +1306,7 @@ describe('Spotify Web API', function() {
       uri.should.equal('https://api.spotify.com/v1/me/player');
       JSON.parse(options.data).should.eql({
         'device_ids': ['deviceId'],
-        'play': true,
-        'deviceIds' : ['deviceId']
+        'play': true
       });
       should.not.exist(options.query);
       callback();