##Objectives: Use String, Hash, Array, and Enumerable methods to decode a string and discover a secret message
INSPIRATION: http://www.youtube.com/watch?v=Wj1d85CLDOQ
##Skills: String.split, Array.each, Hash.each, Hash.sort_by, Range.to_a, Array.reverse, Array.push, Array.join, String.gsub, Array.index
##Instructions: Comments explain steps to manipulate string