Android documentation incorrect / incomplete

[plaa]

I encountered two documentation issues when prototyping this package on a freshly-created RN project:

1. As the native module is written in Kotlin, Kotlin needs to be added to the RN project. The documentation should instruct or link to instructions how to add it.
2. The example app_restriction.xml does not work, as it seems to require the title and description to be references instead of direct strings. Also the 'see example' link is broken.

android/app/src/main/res/xml/app_restrictions.xml:4: AAPT: error: 'Test string description' is incompatible with attribute description (attr) reference.

Thanks for your work!