create Overview of Command-Methods.

Overview-of-Command-Methods.md

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+There is nothing special about command-methods. They are nothing more than the methods found in `ConsoleCommands`. With that said, they do have a particular characteristic beyond the average method. They double-up as the commands the end-user enters in the console's prompt. From your point-of-view, though, they are normal methods - like any other. I call them "Command-Methods" to help separate your code from Console.Waterworks.Core -- that's all. If you prefer to call them methods (or functions), please do.
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+Here is a diagram to help show the "position" of the command-methods within the project.
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+![command-methods overview](attachments/command-methods-overview.png)