API proposal (Not sure if this is the right place to do it)

[eorroe]

Have a nativeApp property on the navigator object:

navigator.nativeApp === {
  name: 'Name of app',
  version: 'Version Number',
  permissions: [{
    name: 'Name of Permission',
    enabled: true || false
  }]
}

and a whole set of properties

Perhaps return the native app object, after resolved via a promise:

navigator.getNativeApp().then(function(nativeApp) {
  // nativeApp being the object described above
});