fix isup to handle http://domain.com case
use non capturing group
http-post-say and http-say support hubot-xmpp

https://github.com/markstory/hubot-xmpp/issues/47#issuecomment-30254299
Merge pull request #1577 from interskh/isup_fix

fix isup to handle http://domain.com case
Merge pull request #1581 from bolasblack/master

http-post-say and http-say support hubot-xmpp