Added TurboGrafx-CD (Super CD) Games

At a users request we have added all the TurboGrafx-CD (Super CD) games to our database. You can see them all by searching for "Super CD" or visiting the TurboGrafx-16 page and looking for titles with "[Super CD]" at the end. With this method of listing the games on our site you can compare prices on all TurboGrafx games on the same page or see prices for only the CD based games too.