Update method overloading to fix options beign ignored bug

This issue was raised in JMPerez#181 but not yet fixed. This fork fixes this issue

Author: baizel

src/typings/spotify-web-api.d.ts

@@ -452,7 +452,22 @@ declare namespace SpotifyWebApi {
      * See [Get a List of a User's Playlists](https://developer.spotify.com/web-api/get-list-users-playlists/) on
      * the Spotify Developer site for more information about the endpoint.
      *
-     * @param {string} userId An optional id of the user. If you know the Spotify URI it is easy
+     * @param {Object} options A JSON object with options that can be passed
+     * @param {function(Object,Object)} callback An optional callback that receives 2 parameters. The first
+     * one is the error object (null if no error), and the second is the value if the request succeeded.
+     * @return {Object} Null if a callback is provided, a `Promise` object otherwise
+     */
+     getUserPlaylists(
+      options?: Object,
+      callback?: ResultsCallback<SpotifyApi.ListOfUsersPlaylistsResponse>
+    ): Promise<SpotifyApi.ListOfUsersPlaylistsResponse>;
+
+        /**
+     * Fetches a list of the current user's playlists.
+     * See [Get a List of a User's Playlists](https://developer.spotify.com/web-api/get-list-users-playlists/) on
+     * the Spotify Developer site for more information about the endpoint.
+     *
+     * @param {string} userId An id of the user. If you know the Spotify URI it is easy
      * to find the id (e.g. spotify:user:<here_is_the_id>). If not provided, the id of the user that granted
      * the permissions will be used.
      * @param {Object} options A JSON object with options that can be passed
@@ -461,7 +476,7 @@ declare namespace SpotifyWebApi {
      * @return {Object} Null if a callback is provided, a `Promise` object otherwise
      */
     getUserPlaylists(
-      userId?: string,
+      userId: string,
       options?: Object,
       callback?: ResultsCallback<SpotifyApi.ListOfUsersPlaylistsResponse>
     ): Promise<SpotifyApi.ListOfUsersPlaylistsResponse>;