#44 sbt-ci-release process support (#45)

* #44 sbt-ci-release process support added with readme ("heavily" inspired by absa's spark-commons)

* #44 release link added to README.md

Author: dk1844

README.md

@@ -175,3 +175,7 @@ This approach has the advantage of being quicker, since taking samples is not so
     //specifying a range of values
     val repartitionedDfWithRange = df.repartitionByDesiredSize(sizer)(minPartitionSizeInBytes, maxPartitionSizeInBytes)
 ```
+
+## How to Release
+
+Please see [this file](RELEASE.md) for more details.

RELEASE.md

@@ -0,0 +1,23 @@
+# Release
+
+Releases of this library are currently handled by [sbt-ci-release](https://github.com/sbt/sbt-ci-release).
+Please see its documentation for more details about how it works if you are interested to know more.
+
+The actual deployments are triggered manually by the maintainers of this repository, using `workflow_dispatch` event
+trigger.
+
+Once changes from a PR were reviewed and merged into the master branch, follow these steps:
+1. Create a new Git Tag and push it to the repository, to the master branch. For example,
+   if you want to release a version 0.4.0 (note that we are using [Semantic Versioning](https://semver.org/)):
+
+    ```shell
+    git tag -a v0.4.0 -m "v0.4.0"
+    git push origin v0.4.0
+    ```
+
+2. In GitHub UI, go to the repository's **Actions** -> **Release** -> **Run workflow**, and under **Use workflow from**
+   use **Tags** and find the tag you created in the previous step.
+
+   > **Important note**: don't run the workflow against the master branch, but against the tag.
+   > `sbt-ci-release` plugin won't be able to correctly find tag, and it will think that you are trying
+   > to do a snapshot release, not an actual release that should be synchronized with Maven Central.

project/plugins.sbt

@@ -32,3 +32,4 @@ addSbtPlugin("de.heikoseeberger" % "sbt-header"        % "5.6.0")
 addSbtPlugin("com.github.sbt"    % "sbt-release"       % "1.1.0")
 addSbtPlugin("com.github.sbt"    % "sbt-pgp"           % "2.1.2")
 addSbtPlugin("com.github.sbt"    % "sbt-jacoco"        % "3.4.0")
+addSbtPlugin("com.github.sbt"    % "sbt-ci-release"    % "1.5.10")