beers.rb

From my lightning talk in Railsberry, Krakow.

Usage

% irb -I.
> require 'beers'
> 3.beers
> 3.beers + 1.beer
> 5.beers.compact
> Random.beers
> Random.beers(5)
> 6.pack
> 24.pack
> Time.now.beer?