The Houston Dynamo won a second consecutive MLS Cup on Sunday at RFK, besting the New England Revolution in a come-from behind 2-1 victory. The Revolution lived up to their tag as the league’s nearly men, losing yet again in the championship match. This loss had to be especially painful for the Revs as they opened the scoring in the 20th minute. Veteran playmaker Steve Ralston found space on the right and crossing perfectly…