Adds archive format override for Windows to use ZIP

This is based on the [Hugo goreleaser][1] configuration.

[1]: https://github.com/gohugoio/hugo/blob/master/goreleaser.yml

.goreleaser.yml

@@ -17,4 +17,11 @@ builds:
       - goos: darwin
         goarch: 386
       - goos: windows
-        goarch: arm
+        goarch: arm
+
+archives:
+  -
+    format: tar.gz
+    format_overrides:
+      - goos: windows
+        format: zip