Added comment with wcf tracing code

Vocaluxe/app.config

@@ -3,4 +3,32 @@
   <startup>
     
   <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup>
+<!-- Enable for WCF tracing
+  <system.serviceModel>
+    <diagnostics>
+      <messageLogging logEntireMessage="true" logMalformedMessages="true"
+          logMessagesAtServiceLevel="true" logMessagesAtTransportLevel="true" maxMessagesToLog="3000" />
+    </diagnostics>
+  </system.serviceModel>
+  <system.diagnostics>
+    <sources>
+      <source name="System.ServiceModel" switchValue="Information,ActivityTracing"
+        propagateActivity="true">
+        <listeners>
+          <add name="xml" />
+        </listeners>
+      </source>
+      <source name="System.ServiceModel.MessageLogging">
+        <listeners>
+          <add name="xml" />
+        </listeners>
+      </source>
+    </sources>
+    <sharedListeners>
+      <add initializeData="C:\temp\TracingAndLogging-service.svclog" type="System.Diagnostics.XmlWriterTraceListener"
+        name="xml" />
+    </sharedListeners>
+    <trace autoflush="true" />
+  </system.diagnostics>
+  -->
 </configuration>