Webpage Icons for Web Clip on iOS
https://developer.apple.com/library/safari/documentation/AppleApplications/Reference/SafariWebContent/ConfiguringWebApplications/ConfiguringWebApplications.html

git-svn-id: https://svn.apache.org/repos/asf/flex/site/trunk@1607716 13f79535-47bb-0310-9956-ffa450edef68