Update Readme compatibility docs (#6100)

authenticator/README.md

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+[![Github Workflow build on main](https://github.com/bitwarden/authenticator-android/actions/workflows/build-authenticator.yml/badge.svg?branch=main)](https://github.com/bitwarden/authenticator-android/actions/workflows/build-authenticator.yml?query=branch:main)
+[![Join the chat at https://gitter.im/bitwarden/Lobby](https://badges.gitter.im/bitwarden/Lobby.svg)](https://gitter.im/bitwarden/Lobby)
+
+# Bitwarden Authenticator Android App
+
+<a href="https://play.google.com/store/apps/details?id=com.bitwarden.authenticator" target="_blank"><img alt="Get it on Google Play" src="https://imgur.com/YQzmZi9.png" width="153" height="46"></a>
+
+Bitwarden Authenticator allows you easily store and generate two-factor authentication codes on your device. The Bitwarden Authenticator Android application is written in Kotlin.
+
+<img src="https://raw.githubusercontent.com/bitwarden/brand/master/screenshots/authenticator-android-codes.png" alt="" width="325" height="650" />
+
+## Compatibility
+
+- **Minimum SDK**: 28 (Android 9)
+- **Target SDK**: 36 (Android 16)
+- **Device Types Supported**: Phone and Tablet
+- **Orientations Supported**: Portrait and Landscape
+
+## Setup
+
+
+1. Clone the repository:
+
+    ```sh
+    $ git clone https://github.com/bitwarden/authenticator-android
+    ```
+
+2. Create a `user.properties` file in the root directory of the project and add the following properties:
+
+    - `gitHubToken`: A "classic" Github Personal Access Token (PAT) with the `read:packages` scope (ex: `gitHubToken=gph_xx...xx`). These can be generated by going to the [Github tokens page](https://github.com/settings/tokens). See [the Github Packages user documentation concerning authentication](https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-gradle-registry#authenticating-to-github-packages) for more details.
+
+3. Setup the code style formatter:
+
+    All code must follow the guidelines described in the [Code Style Guidelines document](docs/STYLE_AND_BEST_PRACTICES.md). To aid in adhering to these rules, all contributors should apply `docs/bitwarden-style.xml` as their code style scheme. In IntelliJ / Android Studio:
+
+    - Navigate to `Preferences > Editor > Code Style`.
+    - Hit the `Manage` button next to `Scheme`.
+    - Select `Import`.
+    - Find the `bitwarden-style.xml` file in the project's `docs/` directory.
+    - Import "from" `BitwardenStyle` "to" `BitwardenStyle`.
+    - Hit `Apply` and `OK` to save the changes and exit Preferences.
+
+    Note that in some cases you may need to restart Android Studio for the changes to take effect.
+
+    All code should be formatted before submitting a pull request. This can be done manually but it can also be helpful to create a macro with a custom keyboard binding to auto-format when saving. In Android Studio on OS X:
+
+    - Select `Edit > Macros > Start Macro Recording`
+    - Select `Code > Optimize Imports`
+    - Select `Code > Reformat Code`
+    - Select `File > Save All`
+    - Select `Edit > Macros > Stop Macro Recording`
+
+    This can then be mapped to a set of keys by navigating to `Android Studio > Preferences` and editing the macro under `Keymap` (ex : shift + command + s).
+
+    Please avoid mixing formatting and logical changes in the same commit/PR. When possible, fix any large formatting issues in a separate PR before opening one to make logical changes to the same code. This helps others focus on the meaningful code changes when reviewing the code.
+
+## Contribute
+
+Code contributions are welcome! Please commit any pull requests against the `main` branch. Learn more about how to contribute by reading the [Contributing Guidelines](https://contributing.bitwarden.com/contributing/). Check out the [Contributing Documentation](https://contributing.bitwarden.com/) for how to get started with your first contribution.
+
+Security audits and feedback are welcome. Please open an issue or email us privately if the report is sensitive in nature. You can read our security policy in the [`SECURITY.md`](SECURITY.md) file.