remove mina, we use heroku now
remove nginx configuration
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Merge pull request #438 from hsbt/remove-env-from-neon

Remove deployment configuration for neon.ruby-lang.org
remove mina and update gem dependency
Merge pull request #448 from FerPerales/master

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Merge pull request #447 from namsk/ko-news-2013-12-14-rubyconf-india

Translate news 2013-12-14-rubyconf-india-2014 into Korean
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