docs: function (fileName, key, value) {
              var file = fileName || store.filename;
              if (!file) {
                  store.log('You must specify a valid file.', 'ERR');
                  return false;
              }
              if (!key) return;
  
              var item = store.stringify(key) + ": " +
                  store.stringify(value) + ",\n";
  
  
  
              var fd = fs.openSync(file, 'a', '0666');
              fs.writeSync(fd, item, null, 'utf8');
              fs.closeSync(fd);
              return true;
          }