create C.W. Overview and add images.

Console.Waterworks-Overview.md

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+Console.Waterworks (C.W.) is a NuGet package. I wrote it in C# with the intension of using it to make console programs. The main feature it provides is a way to make command-based (MVC?) console programs. It does this by parsing input from the end-user and mapping it to a particular "command-method". C.W., also, manages the error-handling which allows you to focus on writing your "business logic". Another way to look at it is C.W. provides the "plumbing code".
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+![Console.Waterworks Data-Flow](attachments/console.waterworks-data-flow.png)