doc: Update documentation to reflect recent changes.

Sources/CropImage/Documentation.docc/Documentation.md

@@ -4,13 +4,13 @@ A simple SwiftUI view where user can move and resize an image to a pre-defined s
 
 Supports iOS 14.0 and above, or macOS Ventura 13.0 and above.
 
-## Overview
-
 - Supports both iOS and macOS
 - Use `ImageRenderer` to render the cropped image, when possible
 - Very lightweight
 - (Optionally) bring your own crop UI
 
+Configure and present ``CropImageView`` to the user, optionally specifying a ``CropImageView/ControlClosure`` to use your own UI controls to transform the image in the canvas, and cancel or finish the crop process, and receive cropped image from ``CropImageView/onCrop``.
+
 ![Preview on macOS](macos)
 
 ## Topics