Documentation about Integration tests

[rvanlaar]

Dear Zeep maintainer,

Userstory:
As a developer I would like to write integration tests when using an external service.
To do that I need documentation on how to and where to stub the responses.

Solution:
My preferred solution is a page in the documentation on how to write tests when interfacing with zeep code.

It's already there, just not in the place I expected it to be.
It seems that this is explained in: http://docs.python-zeep.org/en/master/reporting_bugs.html#errors-when-parsing-the-response