Beyoncé‘s self-titled, initially iTunes-exclusive album “Beyoncé” has become the iTunes Store’s fastest selling album ever, Apple announced. The company said today that Beyoncé sold 828,773 albums worldwide in its first three days, with 617,213 of those albums sold in the U.S., breaking the iTunes first week album sales record. It’s unknown which albums previously held those records, however, Apple has rarely had a…