A controllable snake!

A controllable snake!

Added snake in README!

Day 20/main.py

@@ -0,0 +1,26 @@
+from turtle import Screen
+from snake import Snake
+import time
+
+screen = Screen()
+screen.setup(width=600, height=600)
+screen.bgcolor("black")
+screen.title("A Snake Game!")
+screen.tracer(0)
+
+snake = Snake()
+
+screen.listen()
+screen.onkey(snake.up, "Up")
+screen.onkey(snake.down, "Down")
+screen.onkey(snake.left, "Left")
+screen.onkey(snake.right, "Right")
+
+game_is_on = True
+while game_is_on:
+    screen.update()
+    time.sleep(0.1)
+    
+    snake.move()
+
+screen.exitonclick()