ci: test Node.js 6, 8, 10 and 11 (#227)

DanielRuf · valscion · commit a3ee8e07581b · 2018-11-27T09:15:47.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,6 +6,7 @@ branches:
 node_js:
   - "6"
   - "8"
+  - "10"
   - "node"
 cache:
   - directories:
