Added a README for building offline HTML docs.

      next; from there you can jump to the HOWTOs (in docs/howto) for specific

      problems, and check out the reference (docs/ref) for gory details.

    * See docs/README for instructions on building an HTML version of the docs.

Docs are updated rigorously. If you find any problems in the docs, or think they

should be clarified in any way, please take 30 seconds to fill out a ticket

here:

The documentation in this tree is in plain text files and can be viewed using

any text file viewer.

Technically speaking, it uses ReST (reStructuredText) [1], and the Sphinx

documentation system [2].  This allows it to be built into other forms for

easier viewing and browsing.

To create an HTML version of the docs on a Unix machine (Linux or Mac):

* Install Sphinx (using ``easy_install Sphinx`` or some other method)

* In this docs/ directory, type ``make html`` at a shell prompt.

The documentation in _build/html/index.html can then be viewed in a web browser.

[1] http://docutils.sourceforge.net/rst.html

[2] http://sphinx.pocoo.org/