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I'm actually nearing release of my ACME client that is specifically intended for acquiring Let's Encrypt certificates on shared hosting instances managed with cPanel. It should be ready for release within a few days.
Not yet. It's going to be available from its own website initially. Once it's alpha tested, I'll post another draft illustrated guide in the #lounge for review. While GoDaddy shared hosting with cPanel is my primary target, the delta for other providers should be small enough (and the code should be flexible enough) to work for most any similar setup.