ci: use npm install

Daniel Ruf · Daniel Ruf · commit 869c80a0dfa8 · 2018-11-05T08:37:47.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,6 +6,7 @@ env:
   - BACKEND_CPU=true EXCLUDE_UNCOMPRESSED=true
 addons:
   chrome: stable
+install: npm install
 before_install:
  - export DISPLAY=:99.0
  - sh -e /etc/init.d/xvfb start
