code: function loadIncludes(data, current_file) {
    return data.replace(includeExpr, function(src, name, ext) {
      try {
        var include_path =
            path.join(current_file, "../", name+"."+(ext || "markdown"))
        return loadIncludes(fs.readFileSync(include_path, "utf8"), current_file);
      } catch(e) {
        return "";
      }
    });
  }
docs: Allow including other pages in the data.