net core basic project is not serving any page!

Hi all:

I am doing a very basic course of .net core, I have created an empty .net core project and started to configure it to see how it works.

This is what I did

1) I created a page "index.html" inside of the folder wwwroot. 

2) Modified the method Configure of the class Startup.cs, now it looks like this:

 public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
   loggerFactory.AddConsole();

   if (env.IsDevelopment())
   {
      app.UseDeveloperExceptionPage();
   }

   app.Run(async (context) =>
   {
     app.UseStaticFiles();
  });
}

so basicalley I added: 

app.UseStaticFiles();

to serve pages.

3) I added the nuget package for that line, and here is how my project.json looks like (so I added: "Microsoft.AspNetCore.StaticFiles": "1.0.0"):

{"dependencies": {"Microsoft.NETCore.App": {"version": "1.0.1","type": "platform"
    },"Microsoft.AspNetCore.Diagnostics": "1.0.0","Microsoft.AspNetCore.Server.IISIntegration": "1.0.0","Microsoft.AspNetCore.Server.Kestrel": "1.0.1","Microsoft.Extensions.Logging.Console": "1.0.0","Microsoft.AspNetCore.StaticFiles": "1.0.0"
  },"tools": {"Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
  },"frameworks": {"netcoreapp1.0": {"imports": ["dotnet5.6","portable-net45+win8"
      ]
    }
  },"buildOptions": {"emitEntryPoint": true,"preserveCompilationContext": true
  },"runtimeOptions": {"configProperties": {"System.GC.Server": true
    }
  },"publishOptions": {"include": ["wwwroot","web.config"
    ]
  },"scripts": {"postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

So the issue is that when I go to this url: http://localhost:9966/index.html

nothing happens, it doesn't load the page, in the browser console I don't see any error at all.

Note: I have installed some web package add in, before the url port was 5000 now is different, but the issue was there before anyway.

Thanks,

Marcos