update appvoyer

Author: smasherprog

.appveyor.yml

@@ -46,7 +46,7 @@ build_script:
   - if %platform%==x86 set generator=Visual Studio 15 2017
   - if %platform%==x64 set generator=Visual Studio 15 2017 Win64
   - cmd: echo %generator% %SHARED% %configuration%
-  - cmd: cmake .. -G"%generator%" -DBUILD_SHARED_LIBS=%SHARED% -DCMAKE_INSTALL_PREFIX=./output
+  - cmd: cmake .. -G"%generator%" -DBUILD_SHARED_LIBS=%SHARED% -DCMAKE_INSTALL_PREFIX=./output -DCMAKE_TOOLCHAIN_FILE="%CD%\vcpkg\scripts\buildsystems\vcpkg.cmake"
   - cmd: cmake --build . --target INSTALL --config %configuration%
   - 7z a vc140_%configuration%_%PLATFORM%_%POSTFIXNAME%.zip  -i!%APPVEYOR_BUILD_FOLDER%\build\output\*
   - appveyor PushArtifact vc140_%configuration%_%PLATFORM%_%POSTFIXNAME%.zip