update readme

README.md

@@ -7,4 +7,22 @@
  ## Example Manifests
 
  https://iiif-commons.github.io/iiif-av-component/examples/data/bl/sounds-tests/index.html
+
+ ## Publishing
+
+Checkout the `master` branch, and ensure it is up-to-date.
+
+Run `npm version [major | minor | patch]` for example:
+
+```
+npm version patch
+```
+
+This will update the `package.json` version and create a git tag. Then push both the main/tag.
+
+```
+git push origin main v0.0.8
+```
+
+Then the GitHub action will pick up the tag and publish it to NPM :tada: