Set AppVeyor image to VS 2017

Michael Ganss · Michael Ganss · commit d94aead86b34 · 2017-04-10T13:41:27.000+02:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,5 +1,6 @@
 version: 1.0.{build}
 skip_tags: true
+image: Visual Studio 2017
 init:
   - git config --global core.autocrlf true
 install:
