Add MvvmLight Template

MvvmLightDemo/App.xaml

@@ -0,0 +1,13 @@
+<Application
+    x:Class="MvvmLightDemo.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="clr-namespace:MvvmLightDemo"
+    xmlns:vm="clr-namespace:MvvmLightDemo.ViewModel"
+    StartupUri="MainWindow.xaml">
+    <Application.Resources>
+        <ResourceDictionary>
+            <vm:ViewModelLocator x:Key="Locator" />
+        </ResourceDictionary>
+    </Application.Resources>
+</Application>