https://github.com/juanre/org-jekyll.git
git clone 'git://github.com/juanre/org-jekyll.git'
Org-jekyll — export jekyll blog posts from org-mode.
Juan Reyero, http://juanreyero.com
Extracts subtrees from your org-publish project files that have a :blog: keyword and an :on: property with a timestamp, and exports them to a subdirectory _posts of your project's publishing directory in the year-month-day-title.html format that Jekyll expects. Properties are passed over as yaml front-matter in the exported files. The title of the entry is the title of the subtree.
The full documentation is at:
http://juanreyero.com/open/org-jekyll/