added callout classes and icons
added callout classes and icons

marrero984/showoff,puppetlabs/showoff,marrero984/showoff,puppetlabs/showoff,wanix/showoff,binford2k/showoff,slambert/showoff,slambert/showoff,wanix/showoff,slambert/showoff,binford2k/showoff,slambert/showoff,marrero984/showoff,marrero984/showoff,puppetlabs/showoff,binford2k/showoff,puppetlabs/showoff,binford2k/showoff,wanix/showoff