Document AssetBundle.load better and provide examples

[matanlurey]

API Docs: https://docs.flutter.io/flutter/services/AssetBundle/load.html

Unfortunately, as viewed in this stack overflow post, it's not apparent to users what ByteData can be used for/with. Perhaps the docs for the load method should give an example or two.

[jonahwilliams]

I can track down the original commit and add more context

[Blasanka]

Any update on this?