Parental Gate

Implements "Parental Gate" functionality for Corona apps that want to be included in the App Store KIDS section. It does this by showing a required age authorization dialog on startup that cannot be bypassed. Once the age has been selected, it persists and the user will never be asked to answer the question again. The app can then use the selected age to show or hide various UI elements which conform to Apple’s guidelines about what is acceptable for a KIDS app.