Convert str_replace to strstr in markdown handler because @damiani is smart
Convert str_replace to strstr in markdown handler because @damiani is smart

adamwathan/jigsaw,tightenco/jigsaw,tightenco/jigsaw,quickliketurtle/jigsaw,quickliketurtle/jigsaw,quickliketurtle/jigsaw,adamwathan/jigsaw,tightenco/jigsaw