https://stackedit.io/
https://github.com/lepture/editor
Finaly
use ruby gem “redcarpet” then online edit
https://stackedit.io/ css file
use on website
https://github.com/chjj/marked/
http://strapdownjs.com/
https://github.com/showdownjs/showdown
https://github.com/showdownjs/showdown/tree/master/compressed
https://github.com/showdownjs/showdown/tree/master/compressed/extensions
https://code.google.com/p/pagedown/wiki/PageDown
https://code.google.com/p/pagedown/source/browse/
online editor
http://daringfireball.net/projects/markdown/
http://daringfireball.net/projects/markdown/dingus
online editor
https://stackedit.io/
https://stackedit.io/editor#
http://strapdownjs.com/
https://github.com/evilstreak/markdown-js
http://markdownlivepreview.com/
http://www.codingdrama.com/bootstrap-markdown/
http://demo.neutrinoboy.jp/jquery-markdown/
