function conversion(number1, number2) {
  return countOnes(number1 ^ number2);
}
5.6 Conversion: Write a function to determine the number of bits you would need to flip to convert integer A to integer B.

 EXAMPLE
 Input: 29 (or: 111101), 15 (or: 101111)

 Output: 2

 Hints: #336, #369

@param number1
@param number2