imported signalr 1.1.3 into NzbDrone.

src/Microsoft.AspNet.SignalR.Core/Infrastructure/IServerCommandHandler.cs

@@ -0,0 +1,25 @@
+// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.md in the project root for license information.
+
+using System;
+using System.Threading.Tasks;
+
+namespace Microsoft.AspNet.SignalR.Infrastructure
+{
+    /// <summary>
+    /// Handles commands from server to server.
+    /// </summary>
+    internal interface IServerCommandHandler
+    {
+        /// <summary>
+        /// Sends a command to all connected servers.
+        /// </summary>
+        /// <param name="command"></param>
+        /// <returns></returns>
+        Task SendCommand(ServerCommand command);
+
+        /// <summary>
+        /// Gets or sets a callback that is invoked when a command is received.
+        /// </summary>
+        Action<ServerCommand> Command { get; set; }
+    }
+}