Adding specs for Ruby 2.0.0-p247 and updating Ruby 2.0.0 spec to test for p247 as this is the latest
Changing 2_0_0 manifest to use latest release 2_0_0_p247
Merge pull request #42 from createdbypete/ruby-2-0-0-p247

Finishing touches for Ruby 2.0.0-p247