If your middle school library was anything like mine, there was probably a huge waiting list for the only copy of the Ninja Gaiden book from the Worlds of Power series.WikimediaThe classic young readers series adapted some of the best NES games into full-length books that doubled as game guides. But who came up with this genius idea? And why were only a handful of titles turned into books?1. They were meant to get young boys to readThe series seems like it was thought up in Nintendo's marketing department, but credit actually belongs to Seth Godin. He was