Update .appveyor.yml

Added c:\skyculture-converter into PATH variable

Author: alex-w

.appveyor.yml

@@ -81,7 +81,7 @@ before_build:
   - set USE_EXT_LIBGLES=false
   - set SIGNING=false
   - set INNSPATH=C:\Program Files (x86)\Inno Setup 5;C:\Program Files (x86)\Inno Setup 6
-  - set PATH=%VSPATH%;%QT_BASEDIR%\bin;c:\%exiv2baseName%\bin;%INNSPATH%;c:\%gettextBaseName%\bin;c:\%tidyBaseName%\bin;%PATH%
+  - set PATH=%VSPATH%;%QT_BASEDIR%\bin;c:\%exiv2baseName%\bin;%INNSPATH%;c:\%gettextBaseName%\bin;c:\%tidyBaseName%\bin;c:\skyculture-converter;%PATH%
 
   - ps: if($env:QT_BASEDIR.contains('_64') -or $env:QT_BASEDIR.contains('arm64')) { $env:BITS=64 } else { $env:BITS=32 }
   - ps: if($env:QT_BASEDIR.contains('_64')) { $env:PKGARCH="x64" } else { $env:PKGARCH="x86" }