WWE boss Vince McMahon is reportedly shopping a blockbuster memoir to publishers. Book insiders told the New York Post’s ‘Page Six’ it will be as big as the autobiography by the creator of Nike, Phil Knight. One source said: “It’s essentially his memoir about building WWE. “There have been other bios on him and WWE in the past, but this is very much his memoir told in his voice about his rise and life.” It is said the book is being handled by literary agency Vigliano Associates, which has been behind publications by sports stars including Mike Tyson, Mark Messier and Kevin Garnett. They have a…