bump api to 2.2 + add new album methods

Author: xinranxiao

package.js

@@ -19,4 +19,4 @@ Package.onUse(function(api) {
   api.addFiles('spotify-api.js', 'server');
 });
 
-Npm.depends({ 'spotify-web-api-node': '2.1.0'});
+Npm.depends({ 'spotify-web-api-node': '2.2.0'});

spotify-api.js

@@ -40,7 +40,7 @@ SpotifyWebApi = function(config) {
     'authorizationCodeGrant','refreshAccessToken','getMySavedTracks','containsMySavedTracks',
     'removeFromMySavedTracks','addToMySavedTracks','followUsers','followArtists','unfollowUsers','unfollowArtists',
     'isFollowingUsers','areFollowingPlaylist','isFollowingArtists', 'getFollowedArtists', 'getNewReleases','getFeaturedPlaylists',
-    'getCategories','getCategory','getPlaylistsForCategory'];
+    'getCategories','getCategory','getPlaylistsForCategory', 'removeFromMySavedAlbums', 'addToMySavedAlbums', 'getMySavedAlbums', 'containsMySavedAlbums'];
 
   // Wrap all the functions to be able to be called synchronously on the server.
   _.each(SpotifyWebApi.whitelistedFunctionNames, function(functionName) {