Fix for our CI server when using NancyFX Testing

gistfile1.txt

    public class TestableBootstrapper : ConfigurableBootstrapper
    {
        public TestableBootstrapper(Action<ConfigurableBoostrapperConfigurator> action): base(action)
        {
            
        }

        protected override byte[] FavIcon
        {
            get
            {
                return new byte[1];
            }
        }
    }