Attempt to setup Appveyor

.appveyor.yml

@@ -0,0 +1,46 @@
+image:
+  - Visual Studio 2017
+
+platform:
+  - x64
+
+environment:
+  global:
+    GAMEKIT_SYSTEM_NAME: snake
+    GAMEKIT_APPLICATION_PACKAGE: snake
+    GAMEKIT_APPLICATION_MAIN_CLASS: snake-game
+    GAMEKIT_ARTIFACT: $(GAMEKIT_SYSTEM_NAME)-x86-64-windows.zip
+    GAMEKIT_BUILD_DIR: $(TMP)/$(GAMEKIT_SYSTEM_NAME)
+
+skip_non_tags: true
+
+branches:
+  only:
+    - master
+    - "/^v\\d+(\\.\\d+)+$/"
+
+
+install:
+  - set PATH=C:/msys64/usr/bin;%PATH%
+  - pacman --noconfirm -Syu
+  - pacman --noconfirm -S zip
+  - sh -c "curl -L http://bodge.borodust.org/files/install.sh | sh"
+
+build_script:
+  - >
+    sh -c "$HOME/bin/lisp $HOME/bodge/scripts/build-gamekit-system.lisp
+    %GAMEKIT_SYSTEM_NAME% %GAMEKIT_APPLICATION_PACKAGE% %GAMEKIT_APPLICATION_MAIN_CLASS%
+    $(cygpath -u '%APPVEYOR_BUILD_FOLDER%')
+    $(cygpath -u '%GAMEKIT_BUILD_DIR%')"
+  - mv %GAMEKIT_BUILD_DIR%/%GAMEKIT_SYSTEM_NAME%.zip %GAMEKIT_ARTIFACT%
+
+artifacts:
+  - path: "%GAMEKIT_ARTIFACT%"
+    name: release_archive
+
+deploy:
+  provider: GitHub
+  auth_token:
+    secure: "+JS5PfqKJjiqLG/FWWl4DTyza/fNDDhK75vD99XZaeA6uaviWUgmFWGIe8UwEk5K"
+  artifact: release_archive
+  force_update: true