It seems the OP likes his Vim, Git and Ruby. I have found Org-Mode to be very useful when writing articles. With support for rich text, hyper-links as well the

It seems the OP likes his Vim, Git and Ruby. I have found Org-Mode to be very useful when writing articles. With support for rich text, hyper-links as well the ability to export to HTML (with a TOC, and the ability to pull in your custom CSS/JS files) it makes for a very nice editor. If you are doing Ruby code snippets, Org-Babel works pretty well too. Again, not picking on the OP's tool-kit. Figured I would throw out another alternative.