Bump to RN 0.47 add rn-config

Note: You need to cp env-example to .env and run yarn

android/app/src/main/java/no/neuf/chateau/MainApplication.java

@@ -3,6 +3,7 @@ package no.neuf.chateau;
 import android.app.Application;
 
 import com.facebook.react.ReactApplication;
+import com.lugg.ReactNativeConfig.ReactNativeConfigPackage;
 import com.facebook.react.ReactInstanceManager;
 import com.facebook.react.ReactNativeHost;
 import com.facebook.react.ReactPackage;
@@ -23,7 +24,8 @@ public class MainApplication extends Application implements ReactApplication {
     @Override
     protected List<ReactPackage> getPackages() {
       return Arrays.<ReactPackage>asList(
-          new MainReactPackage()
+          new MainReactPackage(),
+            new ReactNativeConfigPackage()
       );
     }
   };