Allow Preflight options request?

[joshimbriani]

Hey everyone, awesome package! I'm having some issues specifically with the password change API. I'm calling into it (at the api.domainname.com subdomain) with my React frontend from the main domain (domainname.com). When I hit the /password/change/ URL, I get an Response for preflight does not have HTTP ok status error. After looking at the code for this API, it looks like it doesn't support the OPTIONS method and so my OPTIONS preflight request will always be a bad request. Is there a way to get around this? (I installed django-cors-headers and it didn't change anything) I'd be glad to submit a PR if there isn't a better way to do this and folks seem to think it's valuable!