Added Releasing guide

Author: Staubiii

docs/Releasing.md

@@ -0,0 +1,17 @@
+# Releasing ORCA Services CakePHP Feature Flags Plugin
+
+## Prerequisites
+
+- A local copy of the plugin
+- All changes committed & pushed to the Git repo
+- [Git CLI client](https://git-scm.com/downloads)
+- [Composer](http://getcomposer.org/download)
+- Access to the [Git repo](https://github.com/orca-services/cakephp-feature-flags)
+
+## The Release Process
+
+- Update translation (i18n), if available
+- Update the [change log](../CHANGELOG.md) for the release
+- Push the changes to the GitLab repo
+- [Tag](https://github.com/orca-services/cakephp-feature-flags/tags) the revision
+- Copy the [change log](../CHANGELOG.md) entries of the released version in raw as [release notes for the new tag](https://github.com/orca-services/cakephp-feature-flags/releases/new)