Change AiClient required argument

[OGKevin]

Atm it is required to add an API key when creating an Apiclient instance. This will prevent users form making an installation with the bunq api without and api key. I would suggest to change the required argument from api_key to privkey. Ive changed your code to this and tested it. Installation seems to work fine now.

__variables = ['installation_id', 'installation_token', 'api_key',
                   'server_token', 'server_pubkey', 'session_token']

    def __init__(self, privkey, use_sandbox=True, **kwargs):
        self.privkey = privkey

instead of

    __variables = ['installation_id', 'installation_token', 'privkey',
                   'server_token', 'server_pubkey', 'session_token']

    def __init__(self, api_key, use_sandbox=True, **kwargs):
        self.api_key = api_key

[PJUllrich]

Thanks for the input! I will put it on my wishlist and update you as soon as it is implemented :)