Add note

methane · methane · commit 64f59884a1a5 · 2020-02-17T16:58:25.000+09:00
diff --git a/DEVELOP.md b/DEVELOP.md
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+# Developer's note
+
+## Wheels
+
+Wheels for macOS and Linux are built on Travis and AppVeyr, in
+[methane/msgpack-wheels](https://github.com/methane/msgpack-wheels) repository.
+
+Wheels for Windows are built on Github Actions in this repository.
+
