document we officially support various OS's

i build/develop on a mac, i have a windows machine,
my servers run linux and i do prod builds on linux,
and BSD support is generally inherent with linux
and mac.

i don't think it hurts or would be difficult for me
to say i support all of these.

upstream conduit only officially supports Linux

Signed-off-by: strawberry <strawberry@puppygock.gay>

README.md

@@ -50,6 +50,8 @@ #### Why does this fork exist? Why don't you contribute back upstream?
 
 #### How can I deploy my own?
 
+conduwuit officially supports Linux, macOS, BSD, and Windows.
+
 - Simple install (this was tested the most): [DEPLOY.md](DEPLOY.md)
 - Nix/NixOS (and binary cache): [nix/README.md](nix/README.md)
 
@@ -62,8 +64,7 @@ #### How can I contribute?
 2. Ask someone to assign the issue to you (comment on the issue or chat in
    [#conduwuit:puppygock.gay](https://matrix.to/#/#conduwuit:puppygock.gay))
 3. Fork the repo and work on the issue.
-4. Submit a PR (please keep contributions to the GitHub repo, main development is done here,
-not the GitLab repo which exists just as a mirror.)
+4. Submit a PR (please keep contributions to the GitHub repo, main development is done here, not the GitLab repo which exists just as a mirror.)
 
 #### Contact