docs: added npm publishing docs

docs/README.md

@@ -5,3 +5,4 @@ Check out [https://backstage.io]() or see the table of content below.
 - [Architecture and terminology](architecture-terminology.md)
 - [Getting started](getting-started/README.md)
 - [References](reference/README.md)
+- [Publishing](publishing.md)

docs/publishing.md

@@ -0,0 +1,37 @@
+# Publishing
+
+## NPM
+
+NPM packages are published through CI/CD in the
+[.github/workflows/master.yml](../.github/workflows/master.yml) workflow. Every
+commit that is merged to master will be checked for new versions of all public
+packages, and any new versions will automatically be published to NPM.
+
+### Creating a new release
+
+Version bumps are made through release PRs. To create a new release, checkout out
+a new branch that you will use for the release, e.g.
+
+```sh
+$ git checkout -b new-release
+```
+
+Then, from the root of the repo, run
+
+```sh
+$ yarn release
+```
+
+This will bring up the lerna release CLI where you choose what type of version bump
+you want to make, (major/minor/patch/prerelease). The CLI will take you through choosing
+a version, previewing all changes, and then approving the release. Once the release
+is approved, a new commit is created that you can submit as a PR. Push the branch to GitHub:
+
+```sh
+$ git push origin -u new-release
+```
+
+And then create a PR. Once the PR is approved and merged into master, the master build
+will publish new versions of all bumped packages.
+
+[Back to Docs](README.md)