update to 2.4.4 version (build 405)

change requirements: add pcntl as required extension
update docs

src/ZM/Event/SwooleEvent/OnManagerStop.php

@@ -0,0 +1,21 @@
+<?php
+
+
+namespace ZM\Event\SwooleEvent;
+
+
+use ZM\Annotation\Swoole\SwooleHandler;
+use ZM\Console\Console;
+use ZM\Event\SwooleEvent;
+
+/**
+ * Class OnManagerStop
+ * @package ZM\Event\SwooleEvent
+ * @SwooleHandler("ManagerStop")
+ */
+class OnManagerStop implements SwooleEvent
+{
+    public function onCall() {
+        Console::verbose("进程 Manager 已停止！");
+    }
+}