Don't try to install pngquant on travis
Don't try to install pngquant on travis

asciinema/asciinema.org,asciinema/asciinema.org,asciinema/asciinema.org,asciinema/asciinema-server,asciinema/asciinema-server,asciinema/asciinema-server,asciinema/asciinema.org,asciinema/asciinema-server