PNGs weren't optimized on unix & macos
PNGs weren't optimized on unix & macos

jacquesdeklerk/jacquesdeklerk,seanoshea/krissyoshea,lhagan/PlainReader,lhagan/PlainReader,firnny29-cts/helloworld1,derekandtereza/derekandtereza.github.com,h5bp/ant-build-script,fady/ant-build-script,seanoshea/krissyoshea,thetrickster/foundation-bc,thetrickster/foundation-bc,derekandtereza/derekandtereza.github.com,thetrickster/foundation-bc,scraperwiki/urchin-website,lhagan/PlainReader,thetrickster/foundation-bc,lhagan/PlainReader,scraperwiki/urchin-website,lhagan/PlainReader,jacquesdeklerk/jacquesdeklerk,scraperwiki/urchin-website,jacquesdeklerk/jacquesdeklerk