It can work with octopress now. Happy coding.
install
gem install jekyll-multiple-languages
Gemfile
gem 'jekyll-multiple-languages', '~> 1.0.4'
add config to your _config.yml
gems: ['jekyll-multiple-languages']
# Multiple languages
languages: ['en', 'cn']
# If not config, the first of languages will be the default
language_default: 'en'
# If a post of default language not set `no_fill_default_content` to true
# Its content will use to replace if the corresponding content of other languages is not exist.
# fill_default_content: true
Multiple Languages Plugin for Jekyll