ci: Added npm installation script

TwoTenPvP · TwoTenPvP · commit f3cff31e8e87 · 2020-02-03T09:06:58.000+01:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -3,6 +3,9 @@ version: '{branch}-{build}'
 environment:
   nodejs_version: "12"
 
+install:
+  - ps: Install-Product node $env:nodejs_version
+
 configuration:
   - Debug
   - Debug_Lite
