FRAMINGHAM, Mass.--(BUSINESS WIRE)--Staples (NASDAQ: SPLS), one of the world’s largest internet retailers, announced today it has completed the acquisition of Makr, an iOS app that enables people to design and print one-of-a-kind materials, and its parent company Happy; both based in Brooklyn, New York. Terms and conditions of the acquisition were not disclosed. “Makr allows small businesses to build their brands easily, elegantly and in real-time,” said Faisal Masud, executive vice president,