begin fizzbuzz in ruby
handle case input is 1
handle the cases of input can be divieded by 3
handle case of input is 5 and separate code and test
rename the test file
hanle cases when input can be divided by 5
handle a case when input is 15, it should return FizzBuzz
handle cases when input can be divided by 3 and 5, it should return FizzBuzz
change should to expect (new style)
remove code!