BED-STUY - Police say a 15-year-old boy was shot dead Friday night outside of the Louis Armstrong Houses in Bedford-Stuyvesant.Friends and family of Stephon Williams set up a make-shift memorial at the scene of the crime. Police say the boy was shot in his torso outside of 380 Lexington Avenue. Williams lived in the Marcy Houses where neighbors say he dreamed of becoming the next NBA star.Williams? brother, Isaiah says Lexington Avenue was a place where his little brother always felt safe. Police are still searching for the gunman.