chore: bump .travis.yml to use node 10 over 6

brettz9 · brettz9 · commit 39f8628bcbc3 · 2019-06-22T19:40:11.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,8 +1,8 @@
 language: node_js
 node_js:
   - node
+  - 10
   - 8
-  - 6
 before_install:
   - npm config set depth 0
 notifications:
