I've updated the base32-alphabets library / gem 
(formerly known as base32-kai).
What's news in version 1.0?
Now you can encode / decode (big) numbers in 5-bit groups (2^5=32)
with Kai, Crockford or Electrologica notation / alphabet
Happy bits & bytes slicing with ruby
(or deciphering the CryptoKitties genome / genes / 240-bit integer number .