fixes fatlinesofcode/ngDraggable#108
fixes fatlinesofcode/ngDraggable#108

beatboxjs/ngDraggable,endiny/ngDraggable,endiny/ngDraggable,beatboxjs/ngDraggable,JIakki/ngDraggable,akveo/ngDraggable,fatlinesofcode/ngDraggable,Gmulti/ngDraggable,minioak/ngDraggable,minioak/ngDraggable,lucaspenney/ngDraggable,LSEducation/ngDraggable,Gmulti/ngDraggable,dietrich-stein/ngDraggableRedux,fatlinesofcode/ngDraggable,magnet-clip/ngDraggable,dietrich-stein/ngDraggableRedux,brunokindt/ngDraggable,magnet-clip/ngDraggable,paschty/ngDraggable,brunokindt/ngDraggable,akveo/ngDraggable,YellowSharkMT/ngDraggable,lucaspenney/ngDraggable,YellowSharkMT/ngDraggable,LSEducation/ngDraggable,paschty/ngDraggable,JIakki/ngDraggable