reverting c2269fc7bd2defea21870e0f9e6dc5f3686051b0 until Travis-CI updates to Ruby 2.0.0-p0
reverting c2269fc7bd2defea21870e0f9e6dc5f3686051b0 until Travis-CI updates to Ruby 2.0.0-p0

dtao/safe_yaml,dtao/safe_yaml