add image to ScratchPad Overview.

ScratchPad-Overview.md

@@ -4,7 +4,7 @@ The reason "ScratchPad.fsx" exists is to provide a way for you to interact with
 - [F# Interactive (FSI)](https://docs.microsoft.com/en-us/dotnet/fsharp/tutorials/fsharp-interactive/)
 - [Scripting with F#](https://fsharpforfunandprofit.com/installing-and-using/) (it's a little dated but it contains enough information to get you going)
 
-IMAGE OF SCRATCH PAD RELATIONSHIP.
+![scratchpad.fsx relationship](attachments/scratchpad-relationship.png)
 
 If you decide to use "ScratchPad.fsx", you must build the project ("F5" in Visual Studio) beforehand. On top of that, you must change the path when referencing the "SkiaSharp" DLL. This is because I have hard-coded the path (yes, I'm lazy). So, within "ScratchPad.fsx", you should see something like the following at the top of the file,