Improves documentation

Author: raphaelstolt

README.md

@@ -17,6 +17,10 @@ The lean package validator or its abbreviation lpv is a utility tool that valida
 for its `leanness`. A project/micro-package is considered `lean` when its common
 repository artifacts won't be included in release assets.
 
+It can also [create](https://github.com/raphaelstolt/lean-package-validator?tab=readme-ov-file#create-command) and
+[update](https://github.com/raphaelstolt/lean-package-validator?tab=readme-ov-file#update-command) the `leanness`
+enforcing export-ignores entries of a `.gitattributes` file.
+
 ## Installation
 
 The lean package validator CLI can be installed globally through Composer.