[xdga_directories] updated readme

packages/xdga_directories/README.md

@@ -2,7 +2,31 @@
 
 A Dart package for reading directory path on Aurora OS.
 
-To use this package, the basic XDG values for the following are available via a Dart API:
+## Usage
+
+This package can be used alone, but the best solution would be to use `path_provider`.
+
+```yaml
+dependencies:
+  xdga_directories: ^0.0.0 # @todo Not published 
+```
+
+Then you can import `xdga_directories` in your Dart code:
+
+```dart
+import 'package:xdga_directories/xdga_directories.dart' as xdga;
+
+final appDataLocation = xdga.getAppDataLocation();
+final cacheLocation = xdga.getCacheLocation();
+final documentsLocation = xdga.getDocumentsLocation();
+final downloadLocation = xdga.getDownloadLocation();
+final musicLocation = xdga.getMusicLocation();
+final picturesLocation = xdga.getPicturesLocation();
+final genericDataLocation = xdga.getGenericDataLocation();
+final moviesLocation = xdga.getMoviesLocation();
+```
+
+## Supported APIs
 
 - `getAppDataLocation` - Returns a directory location where persistent application data can be stored.
 - `getCacheLocation` - Returns a directory location where user-specific non-essential (cached) data should be written.