attempt setting nodejs version on CI

grantspeelman · grantspeelman · commit 405f461436a0 · 2020-11-27T08:25:10.000+11:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,6 @@
 language: ruby
+node_js:
+  - 10
 rvm:
   - 2.3
   - 2.4
