Version 1.1

Fix Email Validation

Switched to the following for validation of email address,
[ValidatePattern("[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?")]

First Version 1.0

https://poshsecurity.com/blog/2015/1/11/manage-cloudflare-with-powershell-with-posh-cloudflare