Module for handling dns-01 challenges by Dynamic DNS updates

[Yenya]

Hello, Alexander,

I have written a module for storing dns-01 ACME challenges in the Dynamic DNS domain. Do you think it is suitable for inclusion in the Crypt::LE distribution?

Thanks,

-Yenya

[jb-wisemo]

Suggested documentation improvement: Change one of the two example domains to "example.com", this makes it easier to see which domain names are supposed to be the same, and gets rid of the awkward "used both in the DDNS domain name, and inside that name" phrase in the explanation, allowing it to be replaced by "Of cause, if you only rent one domain name, you can use it for both the certificate domain and the DDNS domain" or a similar phrase.

[guest20]

@jb-wisemo that might be a good idea as a second ticket