chore: test appveyor (#168)

Author: richardschneider

.appveyor.yml

@@ -11,11 +11,11 @@ platform:
 
 install:
   - ps: Install-Product node $env:nodejs_version $env:platform
+  - node --version
+  - npm --version
   - npm install
 
 test_script:
-  - node --version
-  - npm --version
   - npm test
 
 build: off