add documentation on installing image compression binaries (#1)
add documentation on installing image compression binaries (#1)

jingoro/nanoc-html5boilerplate,tlevine/www.thomaslevine.com,jingoro/nanoc-html5boilerplate,tlevine/www.thomaslevine.com,tlevine/www.thomaslevine.com,tlevine/www.thomaslevine.com,tlevine/www.thomaslevine.com,tlevine/www.thomaslevine.com,tlevine/www.thomaslevine.com,tlevine/www.thomaslevine.com