Update README

Author: yhirose

README.md

@@ -799,12 +799,12 @@ Include `httplib.h` before `Windows.h` or include `Windows.h` by defining `WIN32
 
 Note: cpp-httplib officially supports only the latest Visual Studio. It might work with former versions of Visual Studio, but I can no longer verify it. Pull requests are always welcome for the older versions of Visual Studio unless they break the C++11 conformance.
 
-Note: Windows 8 or lower and Cygwin on Windows are not supported.
+Note: Windows 8 or lower, Visual Studio 2013 or lower, and Cygwin on Windows are not supported.
 
 License
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-MIT license (© 2021 Yuji Hirose)
+MIT license (© 2022 Yuji Hirose)
 
 Special Thanks To
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