Initial version.
Add threeShouldSayThree function
Add threeShouldSayThree function
add test unit sixShouldSayFizz.
add test tenShouldSayBuzz.
add test unit fifteenShouldSayFizzBuzz.
add test unit fifteenShouldSayFizzBuzz.
add test unit fifteenShouldSayFizzBuzz.
add test unit thirtyoneShouldSayFizz.
add test unit thirtyoneShouldSayFizz.
add test unit sevenShouldSayWhizz.
Refactory to Responsibility Chain mode.
Refactory to Responsibility Chain mode.
good result