Well, if you use Dropbox, you can already do this, although it only
syncs regular saved games to the cloud, not autosaves.
Cloud-syncing autosaves is problematic because there's only one per
game, and if you are offline and can't sync to the cloud and start
playing, you might end up with conflict resolution issues when you do
go online that don't show up with regular saved games. I will
probably eventually tackle this problem, but it's the reason autosaves
don't cloud=sync yet.
I've looked at iCloud syncing and will probably implement that too in
the future, but it's not a priority since Dropbox is free, multi-
platform, and works well.