Added support for renaming of the FSharp.ProjectScaffold and updated the README.MD file

Hi maintainers of FSharp.ProjectScaffold

I added support for an initial renaming of the FSharp.ProjectScaffold and the FSharp.ProjectTemplate

I tested on both WIndows and Mac (no Linux though)

Hope this helps to make a lot more F# projects based on this awesome project template :-)

Regards Ramón