switch to the heroku builds api for easier usage
Merge remote-tracking branch 'public/master' into heroku-builds

Conflicts:
	app/models/commit_status.rb
	app/models/deployment.rb
forgot this method
use real methods
shuffle some of the code around
Merge remote-tracking branch 'public/master' into heroku-builds

Conflicts:
	app/models/deployment.rb
update heroku-builds to be a different provider
remove duplicated #completed? on heroku
warn on execute
Merge pull request #12 from ZeroFucks/heroku-builds

Switch to the heroku builds api for easier usage