fix simpleChat path

Applications/SimpleChat/start_web_server.php

@@ -10,7 +10,7 @@ Autoloader::setRootPath(__DIR__);
 $web_server = new WebServer("http://0.0.0.0:3737");
 $web_server->name = 'SimpleChatWeb';
 $web_server->count = 4;
-$web_server->addRoot('example.com', __DIR__.'/../Web');
+$web_server->addRoot('example.com', __DIR__.'/Web');
 
 if(!defined('GLOBAL_START'))
 {

Workerman/WebServer.php

@@ -171,6 +171,7 @@ class WebServer extends Worker
             if(!is_file($file))
             {
                 $file = "$root_dir/index.html";
+                $extension = 'html';
             }
         }