The entry point of the application.

def main(args=None):
    """The entry point of the application."""
    if args is None:
        args = sys.argv[1:]

    # Parse command-line
    args = docopt(__doc__, argv=args)

    # Parse arguments
    path, address = resolve(args['<path>'], args['<address>'])
    host, port = split_address(address)

    # Validate arguments
    if address and not (host or port):
        print 'Error: Invalid address', repr(address)
        return

    # Default values
    if path is None:
        path = '.'
    if host is None:
        host = 'localhost'
    if port is None:
        port = 5000

    # Run server
    print ' * Serving %s on http://%s:%s/' % (path, host, port)