Provides routes-like dispatching for twisted.web.server.

Frequently, it's much easier to describe your website layout using routes
instead of Resource from twisted.web.resource. This small library lets you
dispatch with routes in your twisted.web application.

Usage:

    from twisted.internet import reactor, task
    from twisted.web.server import Site, NOT_DONE_YET

    # Create a Controller
    class Controller(object):

        def index(self, request):
            return '<html><body>Hello World!</body></html>'

        def docs(self, request, item):
            return '<html><body>Docs for %s</body></html>' % item.encode('utf8')

        def post_data(self, request):
            return '<html><body>OK</body></html>'

        def deferred_example(self, request):
            request.write('<html><body>Wait a tic...</body></html>')
            task.deferLater(reactor, 5, lambda: request.finish())

            return NOT_DONE_YET

    c = Controller()

    dispatcher = Dispatcher()

    dispatcher.connect(name='index', route='/', controller=c, action='index')

    dispatcher.connect(name='docs', route='/docs/{item}', controller=c,
            action='docs')

    dispatcher.connect(name='data', route='/data', controller=c,
            action='post_data', conditions=dict(method=['POST']))

    dispatcher.connect(name='deferred_example', route='/wait', controller=c,
            action='deferred_example')

    factory = Site(dispatcher)
    reactor.listenTCP(8000, factory)
    reactor.run()

Helpful background information:
- Python routes: http://routes.groovie.org/
- Using twisted.web.resources: http://twistedmatrix.com/documents/current/web/howto/web-in-60/dynamic-dispatch.html
