Print Fizz Buzz

Program prints "Fizz" if a number is divisible by 3 and "Buzz" if
divisible by 5 or the number itself if not divisible by either 3 or 5.
Tested upperbound for numbers to be printed - 100000000. Created unit
test to automate testing of multiple numbers to divide by (ex. 1 to 10)
and also upperbound of atleast  100000000.