Diff of 2013-10-18

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* ruby [#bcbf3723]

- RubyからPDFを生成 - prawnを使って
-- http://qiita.com/sawamur@github/items/865ed68323b07061e4f5
 $ sudo apt-get install rubygems
 $ sudo apt-get install rubygems1.9
 yoya@sakura:~$ gem 'prawn'
 ERROR:  While executing gem ... (RuntimeError)
     Unknown command praw
 yoya@sakura:~$ gem1.9.1  'prawn'
 ERROR:  While executing gem ... (RuntimeError)
     Unknown command prawn
 yoya@sakura:~$ gem1.8  'prawn'
 ERROR:  While executing gem ... (RuntimeError)
     Unknown command prawn

 $ sudo apt-get install rails
 $ sudo apt-get install   libsinatra-ruby

- pdfファイルのフォント埋め込みについて
--  http://www.jsiam.org/modules/xfsection/article.php?articleid=57
- よくわかるウェーブレット木
--  http://ja.scribd.com/doc/84843670/Wavelet-Tree-Wo-Tears

- WunderMap
--  http://www.wunderground.com/wundermap/