Update GithubBrowserSample summary string

Author: ChrisCraik

README.md

@@ -17,7 +17,7 @@ A collection of samples using the [Architecture Components](https://developer.an
 
 * **[PersistenceContentProviderSample](https://github.com/googlesamples/android-architecture-components/blob/master/PersistenceContentProviderSample)** - Shows how to expose data via a Content Provider using Room.
 
-* **[GithubBrowserSample](https://github.com/googlesamples/android-architecture-components/blob/master/GithubBrowserSample)** - An **advanced**  sample that uses the Architecture components, Dagger and the Github API. Requires Android Studio 3.0 or later.
+* **[GithubBrowserSample](https://github.com/googlesamples/android-architecture-components/blob/master/GithubBrowserSample)** - An **advanced**  sample that uses the Architecture components, Dagger and the Github API, in Kotlin.
 
 * **[BasicRxJavaSample](https://github.com/googlesamples/android-architecture-components/blob/master/BasicRxJavaSample)** - Shows how to use Room with RxJava 2. Also uses ViewModels.