Add ScottPlot info the Readme

PortfolioManager/Readme.txt

@@ -191,3 +191,11 @@ By following these steps, you can successfully install and use SkiaSharp's nativ
                       <Setter Property="Opacity" Value=".50" />
                   </Style>
                  </DataGrid.Styles>                
+
+
+Install the ScottPlot.Avalonia NuGet package: This package provides the necessary components to integrate ScottPlot plots into your Avalonia application.
+Import the ScottPlot.Avalonia namespace: Add this namespace to your window element in your Avalonia application.
+Add an AvaPlot control: Add an AvaPlot element to your layout in your Avalonia application, giving it a unique name.
+Plot your data: Use the AvaPlot control to display your data and create various plot types, such as line plots, scatter plots, bar charts, and more. 
+
+https://scottplot.net/quickstart/avalonia/