Add Note About Microsoft Visual C++ Redistributable Requirement to README (#237)

Added note for Visual C++ redistributable dependency. This caused a "vcruntime140.dll" error on launch of the vdd companion.

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Co-authored-by: Bud

Author: nsoliven

README.md

@@ -7,6 +7,11 @@ Unlike physical monitors, this virtual display can support resolutions and refre
 
 - [Driver Installer (Windows 10/11)](https://github.com/VirtualDisplay/Virtual-Display-Driver/releases) - Check release page for release notes.
 
+> [!IMPORTANT]
+> Before using the Virtual Display Driver, ensure the following dependencies are installed:
+> - **Microsoft Visual C++ Redistributable**  
+>   If you encounter the error `vcruntime140.dll not found`, download and install the latest version from the [Microsoft Visual C++ Redistributable page](https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170).
+
 ## EDID Database
 - [EDID Database by Bud3699](https://edid.mikethetech.com/)