ensure plugin.yaml is in the tar for manual installs

Your Name · Your Name · commit 4e8ac4ca732d · 2020-04-24T17:19:49.000-07:00
diff --git a/.goreleaser.yaml b/.goreleaser.yaml
@@ -6,3 +6,10 @@ builds:
       - linux
     goarch:
       - amd64
+archive:
+  format: tar.gz
+  files:
+    - README.md
+    - LICENSE
+    - plugin.yaml
+    - install-binary.sh
