add support for options request

[Weihan Li]

please add support for options request

when I send a options request, I got a 404 returned.
when I send a GET request, it works.

[Nate McMaster]

I would accept a PR which adds support for this, but I'm probably not going to do it myself.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Please comment if you believe this should remain open, otherwise it will be closed in 7 days.

[Nate McMaster]

Re-opening. I think this is worth doing, but may not have time myself. I think stale bot was too aggressive here in closing this issue.

[Abdul Rahman]

Hi @natemcmaster, seems like good-first-issue. I am working on this, will raise a PR once done.

[Nate McMaster]

Thanks for the contribution @ansariabr!

Resolved with #45