update to v1.2.0

HandyControlDemo/UserControl/Controls/ImageBrowserDemoCtl.xaml

@@ -0,0 +1,10 @@
+<UserControl x:Class="HandyControlDemo.UserControl.ImageBrowserDemoCtl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             Background="White"
+             DataContext="{Binding ImageBrowserDemo,Source={StaticResource Locator}}"
+             xmlns:controls="clr-namespace:HandyControl.Controls;assembly=HandyControl">
+    <controls:TransitioningContentControl>
+        <Button Command="{Binding OpenImgCmd}" Content="{StaticResource OpenImageBrowser}" Style="{StaticResource ButtonPrimary}" Margin="32"></Button>
+    </controls:TransitioningContentControl>
+</UserControl>