add a simple wrapper to snake.py

snake_main.py

@@ -0,0 +1,11 @@
+from snake2 import Snake
+
+snake = Snake()
+while True:
+    for i in snake.render():
+        print(i)
+    print(snake.gamestate)
+    snake.move(input("choose a move: "))
+    if snake.gamestate == 'gameover':
+        exit(0)
+