Update WinApp packaging script (#93)

build/WindowsApp/README.txt

@@ -1,6 +1,6 @@
 Instructions:
 1) on Linux: sudo apt install unzip zip gettext cmake p7zip-full
-2) on Windows: install DesktopAppConverter and the Windows SDK
+2) on Windows: install DesktopAppConverter and the Windows 10 SDK
 3) Run build.sh to create the ZIP file
 4) Transfer multicraft-windows.zip to Windows and extract it
 5) Edit the settings in the .bat file

build/WindowsApp/package.bat

@@ -1,11 +1,11 @@
 @echo off
 
-REM ---- change these ----
+REM --- change these ---
 SET folderpath=C:\Users\Doge\Desktop\MultiCraft-1.1.8-dev-win32
 SET outputpath=C:\Users\Doge\Desktop
 SET version=1.1.8.0
 SET publisher=example text
-REM ----------------------
+REM --------------------
 
 rem Find path to DesktopAppConverter
 pushd "%ProgramFiles%\WindowsApps"
@@ -13,11 +13,20 @@ set cmd="dir /b Microsoft.DesktopAppConverter_*"
 for /f "tokens=*" %%i in (' %cmd% ') do set appname=%%i
 popd
 
+rem Find installed Windows 10 SDK version
+pushd "%ProgramFiles(x86)%\Windows Kits\10\bin"
+set cmd="dir /b 10.*"
+for /f "tokens=*" %%i in (' %cmd% ') do set sdkver=%%i
+popd
+
 echo Please wait...
 powershell -NoProfile -NoLogo -ExecutionPolicy Bypass^
  -File "%ProgramFiles%\WindowsApps\%appname%\DesktopAppConverter.ps1"^
  -Installer "%folderpath%" -AppExecutable MultiCraft.exe^
  -Destination "%outputpath%" -PackageName MultiCraft^
  -Publisher "CN=%publisher%" -Version %version%
+"%ProgramFiles(x86)%\Windows Kits\10\bin\%sdkver%\x64\MakeAppx.exe"^
+ pack /l^
+ /d "%outputpath%\MultiCraft\PackageFiles" /p "%outputpath%\MultiCraft.appx"
 
 pause