Describe how to release a new version (#494)

Describe how to release a new version

README.md

@@ -302,3 +302,13 @@ public class Cat implements Serializable {
   ...
 }
 ```
+
+## Releasing a new version
+
+In order to release a new version you need to run [Prepare Release](.github/workflows/prepare-release.yml) workflow to
+create na new release tag (e.g. `v1.2.3`).
+
+After its successful run the tag will be pushed back to the origin repository and will
+trigger [Deploy Release](.github/workflows/deploy-release.yml) workflow which will build and deploy release artifacts to
+Maven Central Repository and create a [new release](https://github.com/hazelcast/hazelcast-hibernate/releases) on the
+GitHub