add FlipClock

HandyControlDemo/UserControl/Controls/FlipClockDemoCtl.xaml

@@ -0,0 +1,9 @@
+<UserControl x:Class="HandyControlDemo.UserControl.FlipClockDemoCtl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             Background="{DynamicResource RegionBrush}"
+             xmlns:controls="clr-namespace:HandyControl.Controls;assembly=HandyControl">
+    <controls:TransitioningContentControl>
+        <controls:FlipClock Margin="32"/>
+    </controls:TransitioningContentControl>
+</UserControl>