Update changelog and version

CHANGELOG.md

 ## 0.0.1
 
 - Initial release.
+
+## 0.0.2
+
+- Update description
\ No newline at end of file

pubspec.yaml

 name: open_file_manager
 description: A flutter plugin to open default file manager app. on an Android, it opens Download folder on selected file manager app. on iOS, it opens app folder in default Files app.
-version: 0.0.1
+version: 0.0.2
 homepage: https://github.com/nayanAubie/open_file_manager
 repository: https://github.com/nayanAubie/open_file_manager