Update documentation

README.md

@@ -8,4 +8,25 @@ to tools ot manage and monitor your project under development environment.
 - install uv
 - git clone
 
+## Run
+
+```bash
+uv run src/main.py <project-file.json>
+```
+
 ## Your `<project-name>.json` file
+
+You need one of this file per project configuration, it gives DxCompanion all the information to help you manage your project.
+
+This is a json file which can look like this :
+```json
+{
+    "path": "/path/to/project/directory",
+    "project_name": "Name of your project",
+    "package_managers": ["uv"]
+}
+```
+
+Configuration options :
+
+- `package_managers`: it's a list of packages manager to use with your project, actually supported are `composer` and `uv`