M README.md → README.md

@@ -20,5 +20,14 @@ },
 }
 ```
 
+## Use
 
-```
+In a file, hover a word starting by `+` (project) or `@` (area)
+then `<leader>fl` to open the file.
+
+If the file does not exist, it is created using the provided
+template file.
+
+## TODO
+
+- [ ] Have dynamic variables in template files