ci: add appveyor configuration file

.appveyor.yml

@@ -0,0 +1,48 @@
+version: b{build}-{branch}
+
+branches:
+  except:
+    - dist
+
+environment:
+  matrix:
+    - platform: x64
+      generator: "Visual Studio 15 2017 Win64"
+      appveyor_build_worker_image: Visual Studio 2017
+    - platform: x86
+      generator: "Visual Studio 15 2017"
+      appveyor_build_worker_image: Visual Studio 2017
+    - platform: x64
+      generator: "Visual Studio 14 2015 Win64"
+      appveyor_build_worker_image: Visual Studio 2015
+    - platform: x86
+      generator: "Visual Studio 14 2015"
+      appveyor_build_worker_image: Visual Studio 2015
+    - platform: x64
+      generator: "Visual Studio 12 2013 Win64"
+      appveyor_build_worker_image: Visual Studio 2013
+    - platform: x86
+      generator: "Visual Studio 12 2013"
+      appveyor_build_worker_image: Visual Studio 2013
+
+configuration: Debug
+
+clone_folder: c:\wepoll
+shallow_clone: true
+clone_depth: 1
+
+init:
+  - cmd: set
+
+install:
+  - ps: Install-Product node 'Current'
+
+before_build:
+  - cmd: cmake . -G "%generator%"
+
+build_script:
+  - cmd: cmake --build . --config "%configuration%" --target wepoll.dll
+  - cmd: cmake --build . --config "%configuration%" --target wepoll-combined.dll
+
+test_script:
+  - cmd: cmake --build . --config "%configuration%" --target test-all