Add beer to your js
Based on beers.rb
$ node demo.js or demo
It extends Number and Date JavaScript's data type.
// require and init
require('./beer').bar();
// get 1 beer
(1).beer();
// get 2 beers
(2).beer();
// get double beers
(1).doubleBeers();
// get a beer pack. which contains 6 beers
(6).beerPack();
// check beertime
(new Date).isBeerTime();