Additional check is needed for EaSSL gem version

[upcFrost]

I have two eassl gem versions on my system, v2 and v3. When x509.rb makes require 'eassl' request, the second version is loaded for some reason.
Atm i'm forcing it to load the third version by using

gem 'eassl3'
require 'eassl'

But probably that's not the best solution