4th version of Pin Debit comparison tool. I tried to implement composition and message passing via Sandi Metz Practical Object oriented Design in Ruby. I beleive I messed up the design of the program by trying to dynamically create instance variables and attr_reader methods based on the hash. I need to rethink this aspect of the program, thanks to Uri Agassi for the help

http://stackoverflow.com/questions/27096336/compose-objects-without-initializing-objects-that-are-not-in-hash/27099238#27099238
Merge branch 'master' of github.com:brossetti1/PinPads

Conflicts:
	PinPads.rb

had merge conflicts with previous version, adjusted and recommiting.