Login method using username and password
        
        :param username: the username of your Brunt account
        :param password: the password of your Brunt account
        :return: True if successfull
        :raises: errors from Requests call

def login(self, username, password):
        """ Login method using username and password
        
        :param username: the username of your Brunt account
        :param password: the password of your Brunt account
        :return: True if successfull
        :raises: errors from Requests call
        """
        self._user = username
        self._pass = password
        return self._login()