Merge branch 'dev'

* dev:
  v0.2.7 New service: alerter
  typo
  update faq
  typo; one more commit!
  updated README; GF is asking me to sleep!!
  well documented webapp.js and util.js
  addtional comments
  neednt to restart statsd on bell listener crashing
  typo
  rm old hook
  add built-in alerter hipchat
  add alerter; move `createSocketSever` and `bufferParser` into service.js
  configs.listener.port => ref port
fix bug: ++i in idm
v0.2.8 - fixed idm dead while loop in util