Tests:

To run tests, just type 'rake'

Display Output:

./coin-count.rb TBD

e.g.

./coin-count.rb TBD

Instructions:

There are four types of common coins in US currency: quarters (25 cents) dimes (10 cents) nickels (5 cents) pennies (1 cent)

There are 6 ways to make change for 15 cents: A dime and a nickel; A dime and 5 pennies; 3 nickels; 2 nickels and 5 pennies; A nickel and 10 pennies; 15 pennies.

How many ways are there to make change for a dollar using these common coins? (1 dollar = 100 cents).

[Source http://rosettacode.org]