function paramsEqual(a, b){
  return !Object.keys(a).some(function(k) {
    return a[k] != b[k];
  });
}
Check if accept params are equal.

@param {Object} a
@param {Object} b
@return {Boolean}
@api private

CREDIT:
  https://github.com/visionmedia/express/blob/3.4.5/lib/utils.js#L171