pp より見やすく表示．
README にあるサンプルだと以下のように表示される．
require 'rubygems'
require 'ap'
data = [ false, 42, %w(forty two), { :now => Time.now, :class => Time.now.class, :distance => 42e42 } ]
ap data
via: awesome_print: A New Pretty Printer for your Ruby Objects
http://www.rubyinside.com/awesome_print-a-new-pretty-printer-for-your-ruby-objects-3208.html