updated node version in travis.yml

sivasamyk · sivasamyk · commit e169199e1f8b · 2018-07-01T19:07:59.000+05:30
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 language: node_js
 node_js:
   - "node"
-  - "6.11.1"
+  - "8.11.0"
 script:
   - npm run build
