- Added FileBrowser.DrivesRefreshInterval to refresh the list of driv…

…es at a regular interval so that USB drives can be detected at runtime. By default, this value is 5 seconds on standalone platforms and no refresh will be performed on mobile platforms

- Renamed "Pick Folder" to "Browse..." on Android 10+ (Storage Access Framework)

.github/README.md

@@ -42,7 +42,7 @@ If your project uses ProGuard, try adding the following line to ProGuard filters
 
 - **File browser doesn't show any files on Android 10+**
 
-File browser uses *Storage Access Framework* on these Android versions and users must first click the *Pick Folder* button in the quick links section
+File browser uses *Storage Access Framework* on these Android versions and users must first click the *Browse...* button in the quick links section
 
 - **RequestPermission returns Permission.Denied on Android**
 
@@ -116,6 +116,8 @@ public static bool SetDefaultFilter( string defaultFilter );
 
 To open files or directories in the file browser with a single click (instead of double clicking), you can set **FileBrowser.SingleClickMode** to *true*.
 
+File browser refreshes the list of drives at a regular interval to detect the insertion/removal of USB drives. This interval can be changed via **FileBrowser.DrivesRefreshInterval**. If its value is less than 0, list of drives won't be refreshed. By default, this value is 5 seconds on standalone platforms and -1 on mobile platforms.
+
 On Android, file browser requires external storage access to function properly. You can use the following function to check if we have runtime permission to access the external storage:
 
 ```csharp