update to Google Ads API v12

README.md

@@ -14,7 +14,11 @@ If this project helped you, please **give it a star**.
 
 Give us your feedback [here](https://forms.gle/khdLQ7gDrU8i4p2j9) please. Any feature requests, bugs, satisfaction with the project, or others.
 
-Thank you!
+Testimonial from a company who used this project:
+>"We looked at your app in great detail and learnt a lot from it. 
+Your app worked like a charm and gave us a good sense of various components involved. 
+The [document](https://docs.google.com/document/d/10WyzDUNZTVHhenWgCopf3YyaRDsyoavc7aHuOAMJF6Y/edit?usp=sharing) you provided was also very helpful.
+Thank you fo putting this together."
 
 # Assumptions & Prerequisites