installation, tutorial and reference.

Please feel free to help flesh these out.

See http://sphinx.pocoo.org for more on the tool we are using.

To build html version, go into doc/sphinx and type "make html"
result should end up under the =build subdirectory.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4696 d4fa192b-c00b-0410-8231-f00ffab90ce4