Variable REVERSED_CLIENT_ID can be found in your GoogleService-Info.plist under the same key name.
Variable PHOTO_LIBRARY_USAGE_DESCRIPTION specifies required value for NSPhotoLibraryUsageDescription on iOS.
See: https://github.com/chemerisuk/cordova-plugin-firebase-dynamiclinks
* Improved the docs for firebase dynamic links
The config.xml example needed to switch the ios and android tag.
Added an example how to use onDynamicLink()
* (doc) Reverted change and expanded example
* (doc) Even more comments for clarity