compatible with RN0.46

android/src/main/java/com/evollu/react/fcm/FIRMessagingPackage.java

@@ -23,6 +23,11 @@ public class FIRMessagingPackage implements ReactPackage {
         return modules;
     }
 
+    @Override
+    public List<Class<? extends JavaScriptModule>> createJSModules() {
+        return Collections.emptyList();
+    }
+ 
     @Override
     public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
         return Arrays.<ViewManager>asList();