public void Configuration(IAppBuilder appBuilder)
{
HttpConfiguration config = new HttpConfiguration();
PhysicalFileSystem physicalFileSystem = new PhysicalFileSystem(@".\wwwroot");
FileServerOptions fileOptions = new FileServerOptions();
fileOptions.EnableDefaultFiles = true;
fileOptions.RequestPath = PathString.Empty;
fileOptions.FileSystem = physicalFileSystem;
fileOptions.DefaultFilesOptions.DefaultFileNames = new[] { "index.html" };
fileOptions.StaticFileOptions.FileSystem = fileOptions.FileSystem = physicalFileSystem;
fileOptions.StaticFileOptions.ServeUnknownFileTypes = true;
fileOptions.EnableDirectoryBrowsing = true;
FormatterConfig.ConfigureFormatters(config.Formatters);
config.MapHttpAttributeRoutes();
appBuilder.UseWebApi(config);
appBuilder.UseFileServer(fileOptions);
}