Cutting the Ironfan gem

• Clone/pull this repository.
• Optional: merge in changes.
• Recommended: update a test homebase's Gemfile to use gem 'ironfan', :path => '../ironfan', and make sure cluster launch, cluster stop, cluster start, and cluster kill all work as advertised.
• Run rake spec, and continue only if everything passes.
• Run rake version:bump:patch (or :bump:minor or :bump:major, as appropriate).
• Update the CHANGELOG, including synopses of all major changes (pasting from commit logs is fine).
• Run rake release.