Adding app icons and fixing device builds

mobile/android/app/src/main/java/com/deightonar/MainApplication.java

@@ -12,6 +12,7 @@ import java.util.Arrays;
 import java.util.List;
 
 import com.reactnativenavigation.NavigationApplication;
+import com.airbnb.android.react.maps.MapsPackage;
 
 public class MainApplication extends NavigationApplication {
     @Override
@@ -24,7 +25,7 @@ public class MainApplication extends NavigationApplication {
       // Add additional packages you require here
       // No need to add RnnPackage and MainReactPackage
       return Arrays.<ReactPackage>asList(
-        // eg. new VectorIconsPackage()
+          new MapsPackage()
       );
     }