The latest (stable) version of this framework is 1.x.x which supports react-native 0.25.1. It’s installation instructions are here. To use it specify "react-native-navigation": "latest" in your package.json dependencies.
The following instructions are for the next version 2.0.0-experimental.x, which supports react-native 0.37.0. To use it specify "react-native-navigation": "next" in your package.json dependencies. Bear in mind, as the name of the version suggests - this version is experimental and under heavy development, and will break from time to time - thus when using it you should check out these instructions from time to time to avoid breaking your project.
Note: Android adaptation is still under active development therfore the API might break from time to time.
Add the following to your settings.gradle file located in the android folder:
include ':react-native-navigation'
project(':react-native-navigation').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-navigation/android/app/')
Update project dependencies in build.gradle under app folder.
dependencies {
    compile fileTree(dir: "libs", include: ["*.jar"])
    compile "com.android.support:appcompat-v7:23.0.1"
    compile "com.facebook.react:react-native:+"
    compile project(':react-native-navigation')
}
Your MainActivity should extend com.reactnativenavigation.controllers.SplashActivity instead of ReactActivity. If you have any react-native related methods in your MainActivity you can safely delete them.
Update the MainApplication file and update the Application element in AndroidManifest.xml
import com.reactnativenavigation.NavigationApplication;
    
public class MainApplication extends NavigationApplication {
    
}
<application
    android:name=".MainApplication"
    ...
    />
Implement isDebug and createAdditionalReactPackages methods
import com.reactnativenavigation.NavigationApplication;
    
public class MyApplication extends NavigationApplication {
 
    @Override
    public boolean isDebug() {
        // Make sure you are using BuildConfig from your own application
        return BuildConfig.DEBUG;
    }
    @NonNull
    @Override
    public List<ReactPackage> createAdditionalReactPackages() {
        // Add the packages you require here.
        // No need to add RnnPackage and MainReactPackage
        return null;
    }
}
Run react-native start