Change require_relative with require to rescue ruby 1.9.3
Change text to markdown
Merge pull request #20 from otahi/rescue_ruby_1_9_3

Replace require_relative with require to rescue Ruby 1.9.3
Merge pull request #21 from otahi/make_readme_markdown

Change text to markdown
Converted remaining filenames to snake case.
Renamed more files.
Merge branch 'convert-more-filenames-to-snakecase' of github.com:keithrbennett/dnsruby into convert-more-filenames-to-snakecase
Renamed (again) Cache.rb to cache.rb.
Merge pull request #23 from keithrbennett/convert-more-filenames-to-snakecase

Converted remaining filenames to snake case.