Issue 34

[mfly]

Implementation of suggestions from:
#34

[micke]

Thanks, i really appreciate your contribution but i decided to solve this in a different way.

I don't feel like a whitelist fits in valid_email2 as it's only purpose is to block disposable email addresses, i would rather make sure that the provider list doesn't include any legit email providers.

So instead of adding a whitelist to valid_email2's core i just added a simple whitelist to the pull_mailchecker_emails script so that we can filter out false positives there.