fix(appveyor.yml): use appveyor-retry

pine · pine · commit b2f75b2d2ce0 · 2017-12-28T23:24:11.000+09:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -3,7 +3,7 @@ install:
   - node --version
   - npm --version
 
-  - npm install || npm install
+  - appveyor-retry npm install
 
 test_script:
   - npm test
