add a drawVector function in BotLCMGLClient to control the head width of the arrow
add a drawVector function in BotLCMGLClient to control the head width of the arrow

psiorx/drake,tkoolen/drake,hanssusilo/drake,thientu/drake,astrorog/drake,crogers3/drake,tkoolen/drake,thientu/drake,billhoffman/drake,sheim/drake,crogers3/drake,billhoffman/drake,crogers3/drake,astrorog/drake,psiorx/drake,scottviteri/drake,hanssusilo/drake,edowson/drake,billhoffman/drake,tkoolen/drake,crogers3/drake,thientu/drake,scottviteri/drake,tkoolen/drake,hanssusilo/drake,edowson/drake,astrorog/drake,thientu/drake,tkoolen/drake,astrorog/drake,sheim/drake,crogers3/drake,sheim/drake,scottviteri/drake,scottviteri/drake,thientu/drake,psiorx/drake,psiorx/drake,edowson/drake,hanssusilo/drake,billhoffman/drake,hanssusilo/drake,astrorog/drake,sheim/drake,scottviteri/drake,scottviteri/drake,tkoolen/drake,psiorx/drake,astrorog/drake,billhoffman/drake,psiorx/drake,edowson/drake,hanssusilo/drake,psiorx/drake,hanssusilo/drake,scottviteri/drake,tkoolen/drake,crogers3/drake,thientu/drake,billhoffman/drake,crogers3/drake,sheim/drake,sheim/drake,edowson/drake,sheim/drake,edowson/drake,astrorog/drake,billhoffman/drake,sheim/drake,edowson/drake,billhoffman/drake,edowson/drake,psiorx/drake,thientu/drake,hanssusilo/drake,crogers3/drake