Tells campfire that a Jenkins build failed. Configure the post-build-task plugin ( https://wiki.jenkins-ci.org/display/JENKINS/Post+build+task ) to listen to the console output for failures and point it at a script like this one.

campfire-jenkins.rb

#!/usr/bin/ruby
require 'rubygems'
require 'tinder' #https://github.com/collectiveidea/tinder

campfire = Tinder::Campfire.new('your-subdomain', 
	:token => 'your token', 
	:ssl => true, 
	:proxy => 'http://your-proxy:1234')

room = campfire.rooms.first
room.speak "Jenkins is reporting that the #{ENV['JOB_NAME']} build failed! More details: #{ENV['BUILD_URL']}"