Update README.md

Author: DevX-Cipher

README.md

@@ -7,7 +7,8 @@
 Build native macOS applications — including Cocoa and Qt-based GUI apps — **entirely on Windows**, using Clang, CMake, and Ninja.
 
 ✅ **No Mac required to build.** Just transfer and run the output on a real Mac.
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+🖱️ New: Use the built-in Toolchain GUI to select your macOS SDK, configure deployment targets, and generate CMake projects.
+📂 Find the Toolchain GUI in the tool/ folder of this repo.
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 ## ✨ Features