Add LTS Node.js version to CI settings (#92)

abetomo · mathiasbynens · commit 98fb2ca34e0f · 2019-07-26T11:30:47.000+02:00
https://github.com/nodejs/Release
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,8 @@
 language: node_js
 node_js:
+  - 12
+  - 10
+  - 8
   - 6
 cache:
   directories:
