Bump AppVeyor to use Visual Studio 2015

This is a work around for sass/libsass#1719 which removed a header that broke compilation on VS 2013.
xzyfer · Nov 11, 2015 · c34034d · c34034d
1 parent 4960fdb
commit c34034d
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,4 +1,6 @@
 -
+  os: Visual Studio 2015
+
   branches:
     only:
       - release
@@ -55,6 +57,8 @@
         appveyor_repo_tag: true       # deploy on tag push only
 
 -
+  os: Visual Studio 2015
+
   configuration: testing
 
   platform: