how to retain empty directory just for make the tree complete #798

            var zipName = Path.ChangeExtension(versionPath, ".zip");
            FastZip fastZip = new FastZip();
            fastZip.UseUnicode = true;
            fastZip.StringCodec.CodePage = Encoding.GetEncoding("GB2312").CodePage;
            string filter = null;
            fastZip.CreateZip(zipName, versionPath, true, filter, filter);