A lab for testing and demonstrating Asciidoctor extensions. Please do not use this code in production. If you want to use one of these extensions in your application, create a new project, import the code, and distribute it as a RubyGem. You can then request to make it a top-level project under the Asciidoctor organization.
Since i figured out, belatedly, how to put the files in the right place in my original (#87) PR for this AsciiDoctor extension, this second PR serves no purpose now. I'm closing it.
To support all the kinds of DocBook indexing-markup, in AsciiDoctor.