run CI on current Node.js versions (#1053)

tsvetomir · aciccarello · commit ae67b722f73b · 2019-06-13T09:29:31.000-06:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,9 +2,9 @@ sudo: false
 language: node_js
 
 node_js:
-  - 6
+  - 8
   - 10
-
+  - 12
 
 before_install:
  - npm install --global npm@
