Update README

examples/todoapp/README.md

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-An example of todo app based on Jetpack Compose UI library (desktop and android) and Decompose navigation library.
+An example of Kotlin Multiplatform todo app with shared Jetpack Compose UI.
 
-To run desktop application execute in terminal: ./gradlew desktop:run
+Supported targets: `Android` and `JVM`.
-To run android application you will need to open project in Intellij IDEA or Android Studio and run "android" configuration
+
+Libraries used:
+- Jetpack Compose - shared UI
+- [Decompose](https://github.com/arkivanov/Decompose) - navigation and lifecycle
+- [MVIKotlin](https://github.com/arkivanov/MVIKotlin) - presentation and business logic
+- [Reaktive](https://github.com/badoo/Reaktive) - background processing and data transformation
+- [SQLDelight](https://github.com/cashapp/sqldelight) - data storage
+
+There are multiple common modules:
+- `utils` - just some useful helpers
+- `database` - SQLDelight database definition
+- `main` - displays a list of todo items and a text field
+- `edit` - accepts an item id and allows editing
+- `root` - navigates between `main` and `edit` screens
+
+The `root` module is integrated into both Android and Desktop apps.
+
+Features:
+- 99% of the code is shared: data, business logic, presentation, navigation and UI
+- View state is preserved when navigating between screens, Android configuration change, etc.
+- Model-View-Intent (aka MVI) architectural pattern
+
+To run the desktop application execute the following command: `./gradlew desktop:run`.
+
+To run the Android application you will need to open the project in Intellij IDEA or Android Studio and run "android" configuration.