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http://takuya-1st.hatenablog.jp/entry/2013/08/15/033348
http://koshigoeb.hateblo.jp/entry/2012/08/06/181428
http://blog.satooshi.jp/blog/2013/04/02/how-to-use-yaml-library-in-ruby/
http://seesaawiki.jp/ruby_mechanize/d/Mechanize%3a%3aCookieJar
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