Update node version in Travis

kunalkapadia · kunalkapadia · commit 6ef46a26a349 · 2018-03-23T12:58:22.000+05:30
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,7 @@
 language: node_js
 node_js:
-  - "8.4"
+  - "8.10"
+  - "9.9"
 services:
   - mongodb
 cache:
