fix: add node v12

pine · web-flow · commit d504231c9b3f · 2019-06-01T00:07:20.000+09:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -12,6 +12,7 @@ environment:
   matrix:
     - nodejs_version: 8
     - nodejs_version: 10
+    - nodejs_version: 12
 
 init:
   - git config --global core.autocrlf false
