imported signalr 1.1.3 into NzbDrone.

src/Microsoft.AspNet.SignalR.Core/Messaging/ISubscriber.cs

@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.md in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+
+namespace Microsoft.AspNet.SignalR.Messaging
+{
+    public interface ISubscriber
+    {
+        IList<string> EventKeys { get; }
+
+        Action<TextWriter> WriteCursor { get; set; }
+
+        string Identity { get; }
+
+        event Action<ISubscriber, string> EventKeyAdded;
+
+        event Action<ISubscriber, string> EventKeyRemoved;
+
+        Subscription Subscription { get; set; }
+    }
+}