[Ruby] upgrade from Ruby 1.9.3 to Ruby 2.0.0.
[Ruby] upgrade from Ruby 1.9.3 to Ruby 2.0.0.

Amazingly enough, no deprecations or anything. It just runs as is with no source changes.
grantneufeld/Wayground,grantneufeld/Wayground,grantneufeld/Wayground,grantneufeld/Wayground