Allow unauthenticated invocations? + and REGION issue

Hi @Philmod ,

When executing setup.sh I see: Allow unauthenticated invocations of new function [cloud-notifier]? (y/N)?

Will it work if I keep it protected?

Another point is, by taking a look at the script I saw $REGION that is customizable but not mentioned in the README.md... So I tried it, but when executing the "teardown" it seems for Google Function deletion it's not looking in the right $REGION but the default one: ERROR: (gcloud.beta.functions.delete) ResponseError: status=[404], code=[Not Found], message=[Function XXX in region us-central1 in project YYYYYY does not exist]

Thank you,