def default(event, **kwargs):
    """A Hacktoolkit-flavored default event handler for Slack webhook events

    Returns a payload if applicable, or None
    """
    text = kwargs.get('text')
    command = kwargs.get('command')
    args = kwargs.get('args')

    # for example, we could...
    # make another webhook call in response
    channel = event['channel_id']
    slack_text = 'You said:\n>%s\n Roger that.' % text
    #webhook_call(text=slack_text, channel=channel, username=username)

    payload = {
        'text' : slack_text,
    }
    return payload