code: function numberList(numbers) {
      if (numbers.length < 2) {
        return ordinal(numbers);
      }
  
      var lastVal = numbers.pop();
      return numbers.join(', ') + ` ${locale['and']} ` + ordinal(lastVal);
    }
docs: For an array of numbers, e.g. a list of hours in a schedule,
  return a string listing out all of the values (complete with
  "and" plus ordinal text on the last item).
  @param {Number[]} numbers
  @returns {string}