Letsencrypt SSL Certificate integration via public beta testing of acmetool.sh addon has begun !. Centmin Mod LEMP powered sites will be able to automatically get free SSL certificates to use with their Nginx HTTP/2 based SSL enabled web sites. To help test Letsencrypt SSL integration, read instructions here.
Centmin Mod Insights
A closer look into the code behind Centmin Mod - useful for folks wanting a deeper understanding to develop addons or extend Centmin Mod code for themselves