ci(travis): Retry npm install if it fails

pvdlg · pvdlg · commit 8060f8aaa511 · 2017-08-30T01:10:08.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,6 +7,8 @@ branches:
     - /^greenkeeper.*$/
 git:
   depth: 999
+install:
+  - travis_retry npm install
 script:
   - npm run test
 after_success:
