update elements and fix some bugs

lib/src/firebase-element/firebase-auth.html

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 <link rel="import" href="firebase.html">
@@ skipping 180 matching lines @@
      * containing the authenticated user object from Firebase.
      *
      * If login fails, the `error` event is fired, with `e.detail` containing error
      * information supplied from Firebase.
      *
      * If the browswer supports `navigator.onLine` network status reporting and the
      * network is currently offline, the login attempt will be queued until the network
      * is restored.
      *
      * @method login
-     * @param {Object} (optional) params
-     * @param {Object} (optional) options
+     * @param {Object} params (optional)
+     * @param {Object} options (optional)
      */
     login: function(params, options) {
       if (!this.ref || navigator.onLine === false) {
         this._queuedLogin = {params: params, options: options};
       } else {
         params = params || this.params || undefined;
         options = options || this.options || undefined;
         switch(this.provider) {
           case 'password':
             this.ref.authWithPassword(params, this._loginHandler.bind(this), options);
@@ skipping 166 matching lines @@
         if (!error) {
           this.fire('user-removed');
         } else {
           this.fire('error', error);
         }
       }.bind(this));
     }
   });
 </script>