update

Samples/UIWidgetSample/TextInputCanvas.cs

                     {
                         new SizedBox(width:100, child: new Text("Description")),
                         new Flexible(child: new Container(
+                            height: 200,
-                            child: new EditableText(maxLines: 1,
+                            child: new EditableText(maxLines: 200,
                                 controller: descController,
                                 focusNode: new FocusNode(),
                                 style: new TextStyle(