Adding a comment about the use of DispatcherSynchronizationContext

I'm reading this code, and it took me a few moments to understand what this code did. I've added a comment, pointing to the original post by Stephen Toub, explaining how to leverage the WPF dispatcher for this purpose.

Author: hmemcpy

StyleCop.Analyzers/StyleCopTester/Program.cs

@@ -39,6 +39,10 @@ private static void Main(string[] args)
                     cts.Cancel();
                 };
 
+            // The following allows continuations to be processed by a single thread.
+            // Since Console apps do not have a SyncronizationContext, we're leveraging the built-in support
+            // in WPF to pump the messages via the Dispatcher.
+            // See http://blogs.msdn.com/b/pfxteam/archive/2012/01/21/10259307.aspx for additional details.
             SynchronizationContext previousContext = SynchronizationContext.Current;
             try
             {