Update README.md

README.md

-# open_file_manager
-  
-A flutter plugin to open default file manager app.
+A flutter plugin to open the default file manager app.
+
+## Support
+|             | Android | iOS     |
+|-------------|---------|---------|
+| **Support** | SDK 20+ | iOS 12+ |
 
 ## How it works?
 
 ### Android
-Plugin will shows the available file manager apps in bottom popup and you can select one app to open.
-That app will open with `Download` folder that is public folder.
+The plugin will show the available file manager apps in the bottom popup and you can select one app to open.
+That app will open with the `Download` folder which is a public folder.
 
 ### iOS
-Plugin will open `Files` app in iOS. you need to add following code snippet in `Info.plist` to view your app folder inside `On My iPhone`.
-Also you need to save at least one file to view your app's folder
+Plugin will open the `Files` app in iOS. You need to add the following code snippet in `Info.plist` to view your app folder inside `On My iPhone`.
+Also, you need to save at least one file to view your app's folder
 
 ```xml
 <key>UISupportsDocumentBrowser</key>  
 <true/>
 ```
   
-## Usage  
-It's a very simple to use. there is only one line of code!!!
+## Usage
+
+It's a very simple to use. There is only one line of code!!!
  
  ```dart
  import 'package:open_file_manager/open_file_manager.dart'
 
 openFileManager();
  ```
+
+
+## Preview
+
+https://github.com/nayanAubie/open_file_manager/assets/109264909/8d4997c7-1dd7-4716-952c-fdcb2ed8b767
+
+https://github.com/nayanAubie/open_file_manager/assets/109264909/f5cc61e2-3f7c-4415-b802-e0229ed0974e
+
+