Display npm version.

drewpc · drewpc · commit 01f569f5baee · 2019-04-22T15:27:23.000-06:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,6 +7,7 @@ node_js:
   - "6"
 before_install:
   - npm install -g 'npm@^6.4.0'
+  - npm --version
   - rm package-lock.json
 before_script:
   - npm run lint
