Added addpath command in quadrotorDynamics.m unit test.
Added addpath command in quadrotorDynamics.m unit test.

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