update AppVeyor to use new way and VS2017

Author: AlwinEsch

appveyor.yml

@@ -1,6 +1,6 @@
 version: BuildNr.{build}
 
-image: Visual Studio 2015
+image: Visual Studio 2017
 
 shallow_clone: true
 
@@ -10,12 +10,14 @@ environment:
   app_id: vfs.smb2
 
   matrix:
-    - GENERATOR: "Visual Studio 14"
+    - GENERATOR: "Visual Studio 15 2017"
+      ARCHITECTURE: Win32
       CONFIGURATION: Release
-      WINSTORE: -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION="10.0.14393.0"
-    - GENERATOR: "Visual Studio 14 Win64"
+      WINSTORE: -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION="10.0.17763.0"
+    - GENERATOR: "Visual Studio 15 2017"
+      ARCHITECTURE: x64
       CONFIGURATION: Release
-      WINSTORE: -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION="10.0.14393.0"
+      WINSTORE: -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION="10.0.17763.0"
 
 build_script:
   - cd ..
@@ -25,5 +27,5 @@ build_script:
   - cd build
   - mkdir -p definition\%app_id%
   - echo %app_id% %APPVEYOR_BUILD_FOLDER% %APPVEYOR_REPO_COMMIT% > definition\%app_id%\%app_id%.txt
-  - cmake -T host=x64 -G "%GENERATOR%" %WINSTORE% -DADDONS_TO_BUILD=%app_id% -DCMAKE_BUILD_TYPE=%CONFIG% -DADDONS_DEFINITION_DIR=%APPVEYOR_BUILD_FOLDER%/build/definition -DADDON_SRC_PREFIX=../.. -DCMAKE_INSTALL_PREFIX=../../xbmc/addons -DPACKAGE_ZIP=1 ../../xbmc/cmake/addons
+  - cmake -T host=x64 -G "%GENERATOR%" -A %ARCHITECTURE% %WINSTORE% -DADDONS_TO_BUILD=%app_id% -DCMAKE_BUILD_TYPE=%CONFIG% -DADDONS_DEFINITION_DIR=%APPVEYOR_BUILD_FOLDER%/build/definition -DADDON_SRC_PREFIX=../.. -DCMAKE_INSTALL_PREFIX=../../xbmc/addons -DPACKAGE_ZIP=1 ../../xbmc/cmake/addons
   - cmake --build . --config %CONFIG% --target %app_id%