update elements and fix some bugs

lib/google_map_directions.dart

Index: lib/google_map_directions.dart
diff --git a/lib/google_map_directions.dart b/lib/google_map_directions.dart
index c9eea4e2c0cff8224331b37ef18e57a5a171d21a..6e3ef058a3dc0da992c40a665c16b1fb8ec484be 100644
--- a/lib/google_map_directions.dart
+++ b/lib/google_map_directions.dart
@@ -48,20 +48,14 @@ class GoogleMapDirections extends HtmlElement with CustomElementProxyMixin, Poly
   String get language => jsElement[r'language'];
   set language(String value) { jsElement[r'language'] = value; }
 
-  /// A comma separated list (e.g. "places,geometry") of libraries to load
-  /// with this map. Defaults to "places". For more information see
-  /// https://developers.google.com/maps/documentation/javascript/libraries.
-  ///
-  /// Note, this needs to be set to the same value as the one used on <google-map>.
-  /// If you're overriding that element's `libraries` property, this one also
-  /// needs to be set to the Maps API loads the library code.
-  String get libraries => jsElement[r'libraries'];
-  set libraries(String value) { jsElement[r'libraries'] = value; }
-
   /// The Google map object.
   get map => jsElement[r'map'];
   set map(value) { jsElement[r'map'] = (value is Map || (value is Iterable && value is! JsArray)) ? new JsObject.jsify(value) : value;}
 
+  /// Options for the display of results
+  get rendererOptions => jsElement[r'rendererOptions'];
+  set rendererOptions(value) { jsElement[r'rendererOptions'] = (value is Map || (value is Iterable && value is! JsArray)) ? new JsObject.jsify(value) : value;}
+
   /// The response from the directions service.
   get response => jsElement[r'response'];
   set response(value) { jsElement[r'response'] = (value is Map || (value is Iterable && value is! JsArray)) ? new JsObject.jsify(value) : value;}