Add icon to title bar

Author: Sergio0694

samples/MvvmSampleUwp/Shell.xaml

@@ -19,8 +19,8 @@
         <muxc:NavigationView
             x:Name="NavigationView"
             BackRequested="NavigationView_OnBackRequested"
-            IsBackEnabled="False"
             IsBackButtonVisible="Auto"
+            IsBackEnabled="False"
             IsSettingsVisible="False"
             IsTitleBarAutoPaddingEnabled="False"
             ItemInvoked="NavigationView_OnItemInvoked">
@@ -163,7 +163,13 @@
             Padding="8,0,0,0"
             VerticalAlignment="Top"
             Background="Transparent">
-            <TextBlock VerticalAlignment="Center" Text="MVVM Toolkit Sample App" />
+            <StackPanel Orientation="Horizontal" Spacing="16">
+                <Image
+                    Width="16"
+                    Height="16"
+                    Source="ms-appx:///Assets/StoreLogo.scale-400.png" />
+                <TextBlock VerticalAlignment="Center" Text="MVVM Toolkit Sample App" />
+            </StackPanel>
         </Border>
     </Grid>
 </UserControl>