This minor mode provides a side-by-side preview of your org-exported HTML
files using the either the eww or xwidget browsers. The update frequency of
the preview can be configured to suit your preference.

Quick start:
Put this file under your load path.
Enable the minor mode in an Org buffer:
  M-x org-preview-html-mode
Configure options with M-x customize-group org-preview-html

Source code
org-preview-html's code can be found here:
  http://github.com/jakebox/org-preview-html