updates from heroku devcenter article

https://devcenter.heroku.com/articles/rails-unicorn
use updated payloads from GH
there's always an environment now
Merge pull request #14 from ZeroFucks/update-payloads-from-github

Use updated payloads from GitHub
Merge pull request #11 from Ledej/add-hipchat-support

Add hipchat support
Merge pull request #12 from Ledej/add-rediscloud-support

Add RedisCloud default support
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Procfile
	config/unicorn.rb