update to v1.2.1

HandyControlDemo/UserControl/Controls/ImageBrowserDemoCtl.xaml

@@ -2,9 +2,10 @@
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              Background="White"
+             xmlns:langs="clr-namespace:HandyControlDemo.Properties.Langs"
              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>
+        <Button Command="{Binding OpenImgCmd}" Content="{x:Static langs:Lang.OpenImageBrowser}" Style="{StaticResource ButtonPrimary}" Margin="32"></Button>
     </controls:TransitioningContentControl>
 </UserControl>