update appvoyer

Author: smasherprog

.appveyor.yml

@@ -45,9 +45,8 @@ install:
 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: echo %cd%\vcpkg\scripts\buildsystems\vcpkg.cmake
-  - cmd: cmake .. -G"%generator%" -DBUILD_SHARED_LIBS=%SHARED% -DCMAKE_INSTALL_PREFIX=./output "-DCMAKE_TOOLCHAIN_FILE=%CD%\vcpkg\scripts\buildsystems\vcpkg.cmake"
+  - cmd: echo %generator% %SHARED% %configuration% 
+  - cmd: cmake "-DCMAKE_TOOLCHAIN_FILE=%cd%\vcpkg\scripts\buildsystems\vcpkg.cmake" -G"%generator%" -DBUILD_SHARED_LIBS=%SHARED% -DCMAKE_INSTALL_PREFIX=./output .. 
   - 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