The Arkansas Razorbacks have officially begun the John Calipari era in Fayetteville. The former Kentucky head coach recently pulled off a stunner when he decided to bolt from the Wildcats and sign on to be the head man of the Razorbacks. Arkansas made it official on Wednesday night with an official introduction and press conference. During his introduction to fans, Calipari let the Hog faithful know that he’s not going to change. “It’s me bringing everybody together. Bringing a staff together. Gathering people. Getting a team to understand how you have to work. You ready for this? Together. No…