Supporting admin.* methods

[outime]

Description

I'm attempting to use admin.* paths such as admin.conversations.invite but I don't seem able to. The only solution I found is to either:

• Fork the project.
• Attempt to get access to postMethod via reflection and patch the path.
• Or reimplement the whole POST method chain.

Am I missing an easier way to achieve this? If not, is there any ETA about when these will be supported?

(Optional) Slack's documentation

• admin.conversations.invite

[calebmckay]

It looks like all of admin.go is due for a rewrite - there's several API methods being called that are no longer listed in the docs, and there's no tests attached to it.

I can probably tackle this, starting with the admin.conversations.* methods. The difficulty might be in testing these, since I don't have an Enterprise Grid workspace for these API endpoints.