1、把update.txt下载下来;
http://www.foxtable.com/help/topics/1402.htm
2、读取里面的日期,然后比较;
http://www.foxtable.com/help/topics/0344.htm
3、删除bin文件夹
http://www.foxtable.com/help/topics/0333.htm
代码写到beforeApenPorject事件里去