Update README.md

Nate Smith · web-flow · commit 52a1575fc1c0 · 2019-11-26T10:22:13.000-06:00
diff --git a/README.md b/README.md
@@ -8,7 +8,7 @@ This tool is an endeavor separate from [github/hub](https://github.com/github/hu
 
 _warning, gh is in a very alpha phase_
 
-## OSX
+## macOS
 
 `brew install github/gh/gh`
 
