Adding boilerplate files generated by: berks init
Adding MythbuntuPPA library for mapping supported platform versions to PPA versions
Adding apt cookbook & name to metadata (Fixes FC007 warning)

Removed unnecessary metadata.json
Intelligently detect the latest version of MythbuntuPPA/mythtv to use based on LSB codename
Fix FC019 warning by using symbols to access node attributes consistently
Use Berkshelf-ish VERSION file, and fill in some extra metadata

Note: see https://github.com/RallySoftware-cookbooks/cookbook-development/blob/abf7b136965eeab966e222f8de4f0fd69dfafe0e/lib/cookbook/development/rake/version_tasks.rb#L17-21
Prefer single quoted strings if we don't need interpolation
Adding chefspec tests for the mythtv::default recipe
Adding more supported versions of ubuntu to test-kitchen platforms
Using RallySoftware-cookbooks/cookbook-development for the helpful cookbook test framework
Adding Rake & Strainer files for easy testing (e.g.: `rake`, `strainer test`)
Adding serverspec tests
Adding .travis.yml for CI automated tests

Note: Travis does not support running test kitchen VMs yet