Add logging.

Program.cs

@@ -1,10 +1,9 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.Diagnostics;
 using System.Web.Http;
 using System.Web.Http.SelfHost;
+using MarketData;
+using MarketData.Utils;
 using MarketDataServer.Authorization;
 using MarketDataServer.Handlers;
 
@@ -17,6 +16,11 @@ namespace MarketDataServer
     static readonly Uri _baseAddress = new Uri("http://localhost:8000/");
     static void Main(string[] args)
     {
+      MDTrace.LogLevel = LogLevel.DEBUG;
+      String strLogFile = "marketdataserver.log";
+      Utility.DeleteFile(strLogFile);
+      Trace.Listeners.Add(new TextWriterTraceListener(strLogFile));
+
       Authorizations.GetInstance().IsEnabled = true;
       // Set up server configuration
       HttpSelfHostConfiguration config = new HttpSelfHostConfiguration(_baseAddress);
@@ -26,7 +30,7 @@ namespace MarketDataServer
       var server = new HttpSelfHostServer(config);
       // Start listening
       server.OpenAsync().Wait();
-      Console.WriteLine("Web API Self hosted on " + _baseAddress + " Hit ENTER to exit...");
+      MDTrace.WriteLine(LogLevel.DEBUG,$"Web API Self hosted on {_baseAddress}  Hit ENTER to exit...");
       Console.ReadLine();
       server.CloseAsync().Wait();
     }