Inlude the required AdSupport framework in iOS build.

Including the ANE for iOS does not work unless the ANE links against the AdSupport framework, which
AIR extensions do not do by default.

This PR accomplishes the same thing as https://github.com/freshplanet/ANE-DeviceId/pull/1, but works after today's refactors. Please consider merging one of these PRs, it would have saved me several hours of digging through AIR extension API business to figure out why this wasn't working for me.

If you would prefer to rebuild the .ane yourself, I would be happy to remove the rebuilt ANE from my PR.