>> # Third step. Fetch the access token
    >>> redirect_response = raw_input('Paste the full redirect URL here.')
    >>> oauth_session.parse_authorization_response(redirect_response)
    {
        'oauth_token: 'kjerht2309u',
        'oauth_token_secret: 'lsdajfh923874',
        'oauth_verifier: 'w34o8967345',
    }
    >>> oauth_session.fetch_access_token(access_token_url)
    {
        'oauth_token': 'sdf0o9823sjdfsdf',
        'oauth_token_secret': '2kjshdfp92i34asdasd',
    }
    >>> # Done. You can now make OAuth requests.
    >>> status_url = 'http://api.twitter.com/1/statuses/update.json'
    >>> new_status = {'status':  'hello world!'}
    >>> oauth_session.post(status_url, data=new_status)
    <Response [200]>
    NFc