Add MvvmLight Template

MvvmLightDemo/MainWindow.xaml

@@ -0,0 +1,30 @@
+<Window
+    x:Class="MvvmLightDemo.MainWindow"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:local="clr-namespace:MvvmLightDemo"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    Title="MainWindow"
+    Width="800"
+    Height="450"
+    WindowStartupLocation="CenterScreen"
+    mc:Ignorable="d">
+    <Window.DataContext>
+        <Binding Path="Main" Source="{StaticResource Locator}" />
+    </Window.DataContext>
+    <Grid>
+        <TextBlock
+            Margin="0,0,0,100"
+            HorizontalAlignment="Center"
+            VerticalAlignment="Center"
+            FontSize="20"
+            Text="{Binding Title}" />
+        <Button
+            Padding="10"
+            HorizontalAlignment="Center"
+            VerticalAlignment="Center"
+            Command="{Binding ChangeTitleCommand}"
+            Content="Click Me!" />
+    </Grid>
+</Window>