optparse.rb: update --version example [ci skip]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49547 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
optparse.rb: update --version example [ci skip]
--version option, to print OptparseExample::Version.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49547 b2dd03c8-39d4-4d8f-98ff-823fe69b080e