completed the branch

src/Shared/HandyControlDemo_Shared/ViewModel/Controls/SpriteDemoViewModel.cs

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+using System;
+using GalaSoft.MvvmLight;
+using HandyControl.Controls;
+using HandyControlDemo.UserControl;
+#if netle40
+using GalaSoft.MvvmLight.Command;
+#else
+using GalaSoft.MvvmLight.CommandWpf;
+# endif
+
+namespace HandyControlDemo
+{
+    public class SpriteDemoViewModel : ViewModelBase
+    {
+        public RelayCommand OpenCmd => new Lazy<RelayCommand>(() =>
+            new RelayCommand(()=> Sprite.Show(new AppSprite()))).Value;
+    }
+}