Singalr Chat startup file

*** for this startup file i have to add this sdk in main project *******

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Microsoft.Owin;

using Owin;

[assembly: OwinStartup(typeof(NOBOLO.Library.SignalR.hub.Startup))]

namespace NOBOLO.Library.SignalR.hub

{

    public class Startup

    {

        public void Configuration(IAppBuilder app)

        {

            app.MapSignalR();

        }

    }

}