Updated readme

README.md

@@ -281,4 +281,23 @@ Custom Material SVG Icons will only show up when the application is deployed on
  ```sh
  sudo apt-get install texlive texlive-lang-french texlive-latex-extra pandoc
  ```
- 
\ No newline at end of file
+ 
+# Release policy
+
+Use [semantic versioning](https://semver.org/).
+
+Before releasing a new stable version, one should complete the following files
+ - CHANGELOG.md
+ - package.json (update `version`)
+ - jalhyd_branch (be sure that it contains "master" or is empty)
+
+Every stable version should be tagged with both
+ - the `stable` tag
+ - a version tag of the form `X.Y.Z` (semver)
+
+The `stable` tag should be set **before** the version tag, so that `git describe` returns `X.Y.Z` (latest tag).
+
+Here are the steps to follow for an example **4.5.0** version
+ - git tag -fa stable
+ - git tag -fa 4.5.0
+ - git push --tags --force