Responder type does not match Alert API

[Chaz6]

In the documentation at https://github.com/opsgenie/opsgenie-python-sdk/blob/master/docs/Responder.md it offers the following:-

Properties

Name	Type	Description	Notes
type	str
id	str

However in the alert API documentation at https://docs.opsgenie.com/docs/alert-api for responders, we can see the following are supported in addition to the description above:-

name, type
username, type

Can the python sdk be updated to support these?