Clean up $.pixelDensityRatio comments
Clean up $.pixelDensityRatio comments

Iced-Tea/openseadragon,avandecreme/openseadragon,ricochet2200/openseadragon,rdlester/openseadragon,shaunstanislaus/openseadragon,lidasong2014/openseadragon,rdlester/openseadragon,LarissaSmith/openseadragon,jmnetus/openseadragon,lidasong2014/openseadragon,jmnetus/openseadragon,mcanthony/openseadragon,ricochet2200/openseadragon,seanich/openseadragon,TMUND/openseadragon,mcanthony/openseadragon,msalsbery/openseadragon,TMUND/openseadragon,goofwear/openseadragon,shaunstanislaus/openseadragon,goofwear/openseadragon,LarissaSmith/openseadragon,Iced-Tea/openseadragon,daverome/openseadragon,seanich/openseadragon,msalsbery/openseadragon,daverome/openseadragon,avandecreme/openseadragon,openseadragon/openseadragon,openseadragon/openseadragon