100DaysOfCode: Day 21

Day 21, finish the snake game from day 20. I indeed did day 20 and day 21 in the same day. The concept for me is not that hard, so it’s manageable. And seeing the result is a very good feeling. I like how this is going. The only thing is I didn’t know that “slicing” is not taught yet, so I already use it in my code. No biggie.