Update README.md

Author: Topping1

README.md

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 # whispercppGUI
 GUI for whispercpp, a high performance C++ port of OpenAI's whisper
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+for this GUI to work properly, the file "main.exe" and "whisper.dll" should be copied to the same location of "whisperGUI.exe". Please note that "whisper.dll" only applies to whispercpp compiled with MSVC. For whispercpp compiled with MinGW, only "main.exe" is required.
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+Not all options are implemented yet, only those that are of common use.