Updated zoomify example to show map_as_image.
Updated zoomify example to show map_as_image.

miguelpaz/StoryMapJS,1modm/StoryMapJS,miguelpaz/StoryMapJS,makinacorpus/StoryMapJS,jorol/StoryMapJS,BenHeubl/StoryMapJS,jorol/StoryMapJS,cr3ative/StoryMapJS,1modm/StoryMapJS,makinacorpus/StoryMapJS,jorol/StoryMapJS,BenHeubl/StoryMapJS,miguelpaz/StoryMapJS,wangjun/StoryMapJS,cr3ative/StoryMapJS,1modm/StoryMapJS,BenHeubl/StoryMapJS,makinacorpus/StoryMapJS,cr3ative/StoryMapJS,wangjun/StoryMapJS,wangjun/StoryMapJS,cr3ative/StoryMapJS,1modm/StoryMapJS,BenHeubl/StoryMapJS,wangjun/StoryMapJS,jorol/StoryMapJS