First draft of a documentation about contributing to the web site
Merge pull request #85 from jouvin/jekyll-doc

First draft of a documentation about contributing to the web site
Miscellaneous clarification
YUM migration doc: fix minor formatting issues
Merge pull request #89 from jouvin/yum-migration

Miscellaneous clarification and formatting fixes in YUM migration doc
web site doc: add a reference to GitHub Jekyll usage page.
web site doc: rename page as an attempt to solve #90.
(https://help.github.com/articles/using-jekyll-with-pages suggests name
clash with other projects as one source for the problem)
Recreate web documentation as a Unix file (attempt to fix #90)
Merge pull request #91 from jouvin/jekyll-doc

Web site doc: minor change
Web site doc: remove overlooked conflict
Merge pull request #92 from jouvin/jekyll-doc

Web site doc: remove overlooked conflict
Fix markdown syntax highlighting (use Markdown)
Fix garbage from a previous conflict
Merge pull request #93 from jouvin/jekyll-doc

Fix markdown syntax highlighting (use Markdown)
Remove syntax highlighting for Markdown (seems to break GitHub Pages)
Merge pull request #94 from jouvin/jekyll-doc

Remove syntax highlighting for Markdown (seems to break GitHub Pages)
Implementation of TOC for articles (blog, news, documentation). Based on
- https://github.com/ghiculescu/jekyll-table-of-contents
- http://stackoverflow.com/questions/7985081/how-to-deploy-a-jekyll-site-locally-with-css-js-and-background-images-included

Several options available to customize toc() behaviour. In addition we
may add a CSS...