“Persona”Persona by François Nars – Credit: Photo courtesy of RizzoliPhoto courtesy of RizzoliFrançois Nars may have built a business on his beauty philosophy — accentuating facial attributes and encouraging individuality — but now, he’s quite literally written the book on it.More from WWDCalled “Persona,” Nars’ sixth book spans 480 pages. Nars embarked on photographic escapades…