Updated the sample wpf app

Author: niemyjski

Source/Samples/SampleWpf/App.xaml.cs

@@ -5,6 +5,7 @@ namespace Exceptionless.SampleWpf {
     public partial class App : Application {
         private void Application_Startup(object sender, StartupEventArgs e) {
             ExceptionlessClient.Default.Configuration.UseTraceLogger();
+            ExceptionlessClient.Default.Configuration.UseSessions(useSessionIdManagement: true);
             ExceptionlessClient.Default.Register();
         }
     }