Update Worker.php

Update README.md

Merge pull request walkor#27 from npcchina/master

if(preg_match("/Sec-WebSocket-Key: *(.*?)\r\n/i", $buffer, $match))

Update composer.json

update autoloader

simpleChat check websocket support

Update Worker.php

Merge pull request walkor#16 from coco543/master

实现insert之后返回主键AI的ID