Added in initial observer for after_product_save
Fixed observer to fire correctly, Loop through images ready to process
them
Refactor method used to get media gallery images
Merge commit 'eca3be0dcb1a3a4e3b6cdba23e157f55b727e135' into issue_4

Conflicts:
	app/code/community/Hackathon/SimpleImageHelper/Model/Observer.php
	app/code/community/Hackathon/SimpleImageHelper/etc/config.xml
clean up hard coded image attributes and rely on models, tie in product save observer