Update readme
Update shop URL
Added /etc/logo files used on shirts/stickers
Added /etc/logo files used on shirts/stickers
Added /etc/logo files used on shirts/stickers

Conflicts:
	etc/logo/gum-logo-hamlet.png
	etc/logo/gum-pack-reasonably-small.gif
	grails-app/assets/images/gum/logos/gum-pack-reasonably-small.gif
	grails-app/assets/images/gum/logos/hamlet-logo.png
	web-app/images/gum/logos/gum-pack-reasonably-small.gif
	web-app/images/gum/logos/hamlet-logo.png