Create manifest file

[rlindsgaard]

At the very least the manifest should define cache for mobile/offline use http://www.html5rocks.com/en/tutorials/appcache/beginner/

It would nice with icons for home-screen use too though to highten the user experience.

[rlindsgaard]

Seems the above link is for firefox only. https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/Client-SideStorage/Client-SideStorage.html#//apple_ref/doc/uid/TP40002051-CH4-SW1 and https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/ConfiguringWebApplications/ConfiguringWebApplications.html#//apple_ref/doc/uid/TP40002051-CH3-SW3 are valuable resources for iOS.

https://developer.android.com/guide/webapps/index.html probably contains information for the android platform.

[Munter]

Be ware of the app cache douchebag. That said, use the cache manifest option from assetgraph-builder, then you get these things out of the box