AIR 3.3: Set an iOS app’s MinimumOSVersion

As of Air 3.3 you can set the minimum iOS version of AIR packaged applications. Add the following (with your desired OS version) into <InfoAdditions> in your app descriptor XML file:

<key>MinimumOSVersion</key>
<string>5.0</string>

(Thanks to vabhatia on Stack Overflow)