chore: updated readme

Author: rajamatt

reference/SimpleCalc/README.md

@@ -2,10 +2,27 @@
 
 The Simple Calc workshop is here to help you get started building an app for Desktop, Mobile, and Web with Uno Platform. This workshop is designed to help you get your developer environment set up to start building your first app, while learning about the tools, libraries, and patterns that will help you to build your apps with the Uno Platform.
 
-This app was developed using Uno Platform and draws inspiration from [@adolfomarinucci's](https://x.com/adolfomarinucci) [Calculator project.](https://github.com/adospace/reactorui-maui/tree/main/samples/Calculator)
+This app was developed using Uno Platform and draws inspiration from [@adolfomarinucci's](https://x.com/adolfomarinucci) [Calculator project](https://github.com/adospace/reactorui-maui/tree/main/samples/Calculator).
+
+For a deeper understanding, you can also explore the [Simple Calc workshop](https://aka.platform.uno/simplecalc-workshop), where you'll be guided through the entire app creation process. Each module is accompanied by detailed explanations to ensure a comprehensive learning experience.
 
 ![SimpleCalculator light Image](doc/assets/iphone14-light.png) ![SimpleCalculator dark Image](doc/assets/iphone14-dark.png)
 
-## Workshop
+## Codebase
+
+* [**Calculator.cs**](CSharp-MVUX/SimpleCalculator/Calculator.cs) Calculator logic in a class.
+
+### MVVM
+
+* [**C#-MVVM MainViewModel.cs**](CSharp-MVVM/SimpleCalculator/MainViewModel.cs) C#-MVVM model with [**C#-MVVM MainPage.cs**](CSharp-MVVM/SimpleCalculator/MainPage.cs) C#-MVVM data binding.
+* [**XAML-MVVM MainViewModel.cs**](XAML-MVVM/SimpleCalculator/MainViewModel.cs) XAML-MVVM model with [**XAML-MVVM MainPage.xaml**](XAML-MVVM/SimpleCalculator/MainPage.xaml) XAML-MVVM data binding.
+
+### MVUX
+
+* [**C#-MVUX MainModel.cs**](CSharp-MVUX/SimpleCalculator/MainModel.cs) C#-MVUX states with [**C#-MVUX MainPage.cs**](CSharp-MVUX/SimpleCalculator/MainPage.cs) C#-MVUX data binding.
+* [**XAML-MVUX MainViewModel.cs**](XAML-MVUX/SimpleCalculator/MainModel.cs) XAML-MVUX states with [**XAML-MVUX MainPage.xaml**](XAML-MVUX/SimpleCalculator/MainPage.xaml) XAML-MVUX data binding.
+
+## What is the Uno Platform
 
-For a deeper understanding, you can also explore the [Simple Calc workshop](https://aka.platform.uno/simplecalc-workshop), where you'll be guided through the entire app creation process. Each module is accompanied by detailed explanations to ensure a comprehensive learning experience.
+[Uno Platform](https://platform.uno) is an open-source .NET platform for building single codebase native mobile, web, desktop, and embedded apps quickly.
+For additional information about Uno Platform or if you have any feedback to share, please refer to the [README.md](../../README.md) file in this Samples repository.