Added a README for the root of the docs folder (#26)

Author: csharpfritz

docs/README.md

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+# BlazorWebFormsComponents
+
+A collection of Blazor components that emulate the web forms components of the same name.
+
+## Purpose
+
+These components are made available with the intent to help _brown-field_ application developers.
+
+These components are intended to help an application that already exists and would like to be able to migrate it _more easily and without a complete rewrite_ to the latest version of Blazor so that you can extend your support opportunities as well as consider the possibility of using alternate renderings and even running within WebAssembly.
+
+This is __NOT__ intended to be used for new applications, and you will find that some of the rendering delivered by these controls is considered "bad practice" by 2020 web standards.  This is by design in order to ensure compatibility with the original controls delivered with ASP.NET Web Forms.
+
+## Contents
+
+This folder contains information about each of the components that emulate the original controls, as well as documentation about how to use them together to enhance your existing application.  Hopefully, with a little bit of work you will be able to make the conversion to Blazor.