TrelloClient invalid "token_key"?

[sgaynetdinov]

class TrelloClient(object):
    """ Base class for Trello API access """

    def __init__(self, api_key, api_secret=None, token=None, token_secret=None):
        """
        Constructor
        :api_key: API key generated at https://trello.com/1/appKey/generate
        :api_secret: the secret component of api_key
        :token_key: OAuth token generated by the user in
                    trello.util.create_oauth_token
        :token_secret: the OAuth client secret for the given OAuth token
        """

in params write token in the document lines token_key