Fix high CPU usage by flutter_webview_plugin

fluttercommunity/flutter_webview_plugin#386

Author: lucianoiam

app/lib/main.dart

@@ -120,6 +120,7 @@ class WebApp extends StatelessWidget {
          });
 
           // Build application
+          // https://github.com/fluttercommunity/flutter_webview_plugin/issues/386
           return MaterialApp(
               title: title,
               theme: themeData,
@@ -130,6 +131,7 @@ class WebApp extends StatelessWidget {
                   url: _initialUrl.toString(),
                   primary: true,
                   geolocationEnabled: true,
+                  initialChild: Container()
               )
             )  
           );

app/pubspec.yaml

@@ -31,7 +31,7 @@ dependencies:
   #webview_flutter: ^0.3.4
   #webview_flutter:
   #  git:
-  #    url: https://github.com/iamluciano/plugins.git
+  #    url: https://github.com/lucianoiam/plugins.git
   #    path: packages/webview_flutter
   #  path: ../../flutter-plugins/packages/webview_flutter