An emoji collection view sample app written during Swift: Learning through mobbing at PDX Cocoaheads: https://www.meetup.com/PDX-iOS-CocoaHeads/events/267312896/?read=1&_xtd=gatlbWFpbF9jbGlja9oAJDg1Y2UzYjgxLWYxODUtNGYxZS1iMGE3LTQ0ZjY5ODk0NjU2Nw&_af=event&_af_eid=267312896