11. Challenge Bonus 15%: Write a function called knightsMove, to calculate how many knights moves it will take to get from two input numbers to two target numbers. A knights move is one that either adds 2 or subtracts 2 from one number and adds 1 or subtracts 1 from the other number. So if my inputs were: 1 and 4 and the target was: 6 and 0 then the moves I could make are: 1+2 = 3, 4-1=3 3+1 = 4, 4-2=1 4+2= 6, 1-1 =0 so the function would return 3, indicating that it would take 3 knights moves to reach the target. I would also like the function to output the steps it took to reach the goal. Extra bonus given if you can output it on a chessboard:

	0	1	2	3	4	5	6	7
0
1					1
2
3				2
4		3
5
6	4
7