fix(docs): add some reminders for how releasing a new version works so I may do it more swiftly in the future

Author: chrisspiegl

readme.md

@@ -6,3 +6,17 @@
 * Website: [PushNotice.chat](https://pushnotice.chat)
 
 This is work in progress and will be developed further.
+
+## Installation & Usage
+
+To be added.
+
+## Release
+
+- Commit all changes to the `main` branch.
+- Run `pnpm release` to build and release a new version. This will:
+  - merge the `main` branch into the `release` branch
+  - create a new release commit and tag
+  - push the `release` commit and tag to the remote repository
+  - on GitHub, the release will be created automatically
+  - GitHub Actions will also publish the release to npm