ATEAM-11373: Update README.md [SKIP CI] (#43)

README.md

@@ -122,6 +122,10 @@ module "autoscale_dns" {
 }
 ```
 
+## Contributing
+
+Please read [CONTRIBUTING.md](CONTRIBUTING.md) to understand how to submit pull requests to us, and also see our [code of conduct](CODE_OF_CONDUCT.md).
+
 ## Difference between Lifecycle action
 
 Lifecycle_hook can have `CONTINUE` or `ABANDON` as default_result. By setting default_result to `ABANDON` will terminate the instance if the lambda function fails to update the DNS record as required. `Complete_lifecycle_action` in lambda function returns `LifecycleActionResult` as `CONTINUE` on success to Lifecycle_hook. But if lambda function fails, Lifecycle_hook doesn't get any response from `Complete_lifecycle_action` which results in timeout and terminates the instance.