chore: Update travis

Intellicode · Intellicode · commit 0df66ec11158 · 2018-09-10T20:03:51.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-  - 5
-  - 6
+  - 8
+  - 10
 after_success:
   - npm run coveralls
