runtime 目录添加文件，防止runtime目录丢失

.gitignore

@@ -3,7 +3,11 @@
 *.log
 /.env
 **/*.pid
-runtime/
+runtime/cache
+runtime/log
+runtime/session
+runtime/temp
 install.lock
 public/uploads
+public/download
 remarks.txt

crmeb/runtime/index.php

@@ -0,0 +1,10 @@
+<?php
+// +----------------------------------------------------------------------
+// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2016~2020 https://www.crmeb.com All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
+// +----------------------------------------------------------------------
+// | Author: CRMEB Team <admin@crmeb.com>
+// +----------------------------------------------------------------------