code: function tickle(req, res, next) {
  
    req.tickle = global.tickle.add(req.url);
    return next !== undefined ? next() : req.tickle;
  }
docs: main
  
  @exports tickle
  @function tickle
  @param {Object} req - client request
  @param {Object} [res] - response to client
  @param {next} [next] - continue routes
  @return {Integer|Functions}