add appveyor settings

appveyor.yml

@@ -0,0 +1,26 @@
+version: 1.0.{build}
+branches:
+  only:
+  - dev
+build_script:
+- ps: .\build.ps1
+test: off
+artifacts:
+- path: artifacts/packages/*.nupkg
+deploy:
+- provider: NuGet
+  server: https://www.myget.org/F/identity/
+  api_key:
+    secure: 43SK7fLJcrno252Wqb6j+jFYeTjaHG8EWXruhHv6kW+bbySa4uBGTPNFjA7lzD0Y
+  skip_symbols: true
+  on:
+    branch: dev
+
+image: Visual Studio 2017
+
+#---------------------------------#
+#  Skip builds for doc changes    #
+#---------------------------------#
+skip_commits:
+  # Regex for matching commit message
+  message: /docs.*/