Conan_Usage.md

@@ -29,7 +29,7 @@ conan install --build=missing -s compiler="Visual Studio" -s compiler.version=15
 cmake <relative path to source directory>
 ```
 * **Troubleshooting:**
- * Windows 8.1 SDK in the Visual Studio 2017 Installer apparently has to be ticked otherwise an error with missing ctypes.h occurs during building glew
+ * Windows Universal CRT SDK in the Visual Studio 2017 Installer apparently has to be ticked otherwise an error with missing ctypes.h occurs during building glew. O
 
 ### Apple