Metatag iTunes

This module adds the "Smart App Banners", apple-itunes-app, meta tag via the metatag module.

Smart App Banners vastly improve users' browsing experience compared to other promotional methods. As banners are implemented in iOS 6, they will provide a consistent look and feel across the web that users will come to recognize. Users will trust that tapping the banner will take them to the App Store and not a third-party advertisement. They will appreciate that banners are presented unobtrusively at the top of a webpage, instead of as a full-screen ad interrupting the web content. And with a large and prominent close button, a banner is easy for users to dismiss. When the user returns to the webpage, the banner won’t reappear.

See https://developer.apple.com/library/mac/documentation/AppleApplications/... for a detailed explanation.