A festive atmosphere overtook V Street between 13th and 14th Streets NW this afternoon, as the U Street community took time to celebrate the life of the prolific Langston Hughes — the stretch of pavement was officially dubbed Langston Hughes Way — and to celebrate the neighborhood-at-large. Many U Street businesses set up shop along V Street, and attendees enjoyed entertainment from the Washington Showstoppers Marching Band, a drum performance by students at the Children’s…