updated:flutter 2.0 support;updated:example 1

Author: Dn-a

example/lib/children/left_child_1.dart

@@ -12,7 +12,6 @@ class LeftChild extends StatelessWidget {
 
     final double swipeOffset =
         context.select((DrawerNotifier value) => value.swipeOffset);
-
     return Material(
         child: Stack(
       children: <Widget>[