L.rotateImageLayer = function(url, bounds, options) {
            return new L.RotateImageLayer(url, bounds, options);
          };
// A quick extension to allow image layer rotation.
          L.rotateImageLayer = L.ImageOverlay.extend({
            options: {rotation: 90},
            _animateZoom: function(e){
              L.ImageOverlay.prototype._animateZoom.call(this, e);
              var img = this._image;
              img.style[L.DomUtil.TRANSFORM] += ' rotate(' + this.options.rotation + 'deg)';
            },
            _reset: function(){
              L.ImageOverlay.prototype._reset.call(this);
              var img = this._image;
              img.style[L.DomUtil.TRANSFORM] += ' rotate(' + this.options.rotation + 'deg)';
            }
          });