[Twisted-Python] Doc suggestion for post-installation

[Jeff Bauer]

I have a modest suggestion for the "Installing Twisted"
document, shamelessly borrowed from ZODB.

Upon installation, suggest that the user try running 
the following from the python interpreter:

  $ python
  >>> import twisted.copyright
  >>> print twisted.copyright.version
  1.0.0rc3

This would catch an obvious import error of leaving
twisted out of PYTHONPATH, or accidentally using an
older, previously installed version of Twisted.

If the line:

   __version__ = "1.0.0rc3" 

were placed in the base __init__.py file, the above
python commands could be shortened to:

  >>> import twisted
  >>> print twisted.__version__

Regards,

Jeff Bauer
Rubicon Research