add: README

start.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+# 双击启动本地服务器并打开游戏
+cd "$(dirname "$0")"
+PORT=8123
+python3 -m http.server "$PORT" >/dev/null 2>&1 &
+SRV=$!
+sleep 1.5
+open "http://localhost:$PORT/"
+echo "游戏已启动： http://localhost:$PORT/  (关闭本窗口即可停止服务器)"
+wait $SRV