ruby/www.ruby-lang.org — pull request #471 by makimoto (2013-12-18 10:07:10+00:00)
Title: Translate maintenance-of-1-8-7-and-1-9-2 into Japanese

I translate [Security Maintenance Extension of Ruby 1.8.7 and 1.9.2](http://www.ruby-lang.org/en/news/2013/12/17/maintenance-of-1-8-7-and-1-9-2/) into Japanese.