chadrem/workers — pull request #1 by jure (2014-04-10 17:17:44+00:00)
Title: Add documentation about GIL in MRI and a recommendation for JRuby.

Taken from the blog post http://remesch.com/2013/01/22/workers-and-tribe-ruby-threading-simplified/ and adapted slightly.

I think it makes sense that this recommendation/warning/explanation is also available in the docs, thus this PR.