add ip to $_SERVER
Merge pull request #12 from terry2010/master

add ip to $_SERVER
websocket php client
整理Client代码
整理代码
open keepalive
fixed bug.
fixed webim bugs.
webim upadte
webim upadte
webim upadte: history log
max_request
update readme
webim update
http server for ie
webim process rename
delete echo
added host & port info
added index.html
Update README.md