code: function renderTmpl (path, vars, callback) {
      fs.readFile(path, 'utf8', function (err, file) {
          if (err) {
              return callback(err);
          }
          var out = file.replace(/\{\{([a-z]+)\}\}/ig, function (all, name) {
              return vars[name];
          });
          callback(null, out);
      });
  }
docs: Poor-man's mustache