Note about background images
Note about background images

Fixes #271

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