Lockhart Smokehouse's second location is near the corner of 15th & K Streets in old downtown Plano. (Photo ©Chris Wilkins/Texas BBQ Posse) February 12, 2014, may go down in history as the day great barbecue finally came to Plano. In the past, if you wanted good BBQ and lived in Plano, you had to drive to either south to downtown Dallas or north to McKinney. Sad but true for a city of 272,000. Then Lockhart Smokehouse came to town...... The Posse first met the Lockhart crew when we snuck into the original location in Oak Cliff before they opened in…