[All Samples] Add NiA to additional samples (#807)

* Add NiA to additional samples

* Fix NiA screenshot extension type

Co-authored-by: Rebecca Franks <[email protected]>

README.md

@@ -45,6 +45,8 @@ project from Android Studio following the steps
 | <br><img src="readme/sunflower.png" alt="Sunflower" width="240"></img>  <br><br>A gardening app illustrating Android development best practices with Android Jetpack. The `compose` branch is partially built with Jetpack Compose.<br><br>• Compose working in an existing app: including integration with strings, resources, and themes and styles<br>• Integration with an existing architecture based on Jetpack libraries<br>• `CollapsingToolbarLayout` behavior implemented manually with Compose<br>• Showing [Snackbars](https://material.io/components/snackbars) with Compose<br><br>**[> Browse](https://goo.gle/sunflower-compose)** <br><br>  | <img src="readme/screenshots/Sunflower.png" width="320" alt="Sunflower sample demo">|
 |  |  |
 | <br><img src="readme/tivi.png" alt="Tivi" width="240"></img>  <br><br>A work-in-progress TV show tracking Android app, which connects to [Trakt.tv](https://www.trakt.tv).<br><br>• Entirely written in [Kotlin](https://kotlinlang.org) and uses [Kotlin Coroutines](https://kotlinlang.org/docs/reference/coroutines/coroutines-guide.html) throughout<br>• Uses many of the [Architecture Components](https://developer.android.com/topic/libraries/architecture): Room, Lifecycle, Navigation<br>• Uses [Hilt](https://dagger.dev/hilt) for dependency injection<br><br>**[> Browse](https://tivi.app)** <br><br>  | <img src="readme/screenshots/Tivi.jpg" width="320" alt="Tivi sample demo">|
+|  |  |
+| <br><img src="readme/nia.png" alt="Now in Android" width="240"></img>  <br><br>An app for keeping up to date with the latest news and developments in Android.<br><br>• [Jetpack Compose](https://developer.android.com/jetpack/compose) first app.<br>• Implements the recommended Android [Architecture Guidelines](https://developer.android.com/topic/architecture) <br>• Integrates [Jetpack Libraries](https://developer.android.com/jetpack) holistically in the context of a real world app<br><br>**[> Browse](https://github.com/android/nowinandroid)** <br><br>  | <img src="readme/screenshots/NiA.png" width="320" alt="Now In Android Github Repository">|
 
 ## License
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