need to add "extras_require" to setup.py file per module

[GoogleCodeExporter]

the setup.py file needs an extensive extras_require section to allow
easy_install for individual packages.

For example, the zope.testbrowser intecept needs:

extras_require = {
    'zope.testbrowser': ['zope.testbrowser', 'mechanize>=0.1.7'],
}

Documentation needs updating to explain the instllation, i.e. :

    easy_install wsgi_intercept[zope.testbrowser]

Original issue reported on code.google.com by kumar.mcmillan on 10 Dec 2007 at 4:58