After a rude diner complained about a special needs employee at a pizza shop, the owner decided to address the issue by hanging the perfect sign on the restaurant’s front door. The message said it all. Amanda Cartagine helps those with disabilities by giving them jobs at her Pizza Inn pizza shop in Greenville, South Carolina. (Photo Credit: Facebook) Amanda Cartagine, the owner of Pizza Inn on Woodruff Road in Greenville, South Carolina, goes ab…