add horizontal dlists
Make Rakefile work with older versions of rake

Use Ruby's respond_to? method to check that the markup method exists on RDoc before attempting to invoke it.
Merge pull request #142 from mojavelinux/horizontal-lists

Add horizontal dlists
Merge pull request #141 from mojavelinux/patch-1

Make Rakefile work with older versions of rake
Remove superfluous test file. Fixes #145
Updating the README to reflect the cli usage
Update to reflect the asciidoctor-safe cli
Add Rubinius to list of supported Ruby versions
Merge pull request #146 from LightGuard/readme_update

Updating the README to reflect the cli usage
Tidy up some text in the README
Change ref to asciidoc.py
Remove old cli section, small revisions
Update to preface
Minor edit to preface