Venus merge request: xpath-sifter configuration example

[Sam Ruby]

Mary Gardiner wrote:
> I am not fluent in XPath and yet wanted to use the xpath-sifter.py
> function. In case there are others in my boat I've done a slightly more
> verbose example. bzr branch is at
> http://users.puzzling.org/users/mary/bzr/venus/branches/venus-xsltdoc/
> and the actual documentation file is attached.

Pulled.  Thanks!

> -Mary

- Sam Ruby