update to latest supported node versions

William REDACTED · William REDACTED · commit 2c2b2964da7f · 2018-01-20T06:20:11.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,8 @@
 # Officially supporting the latest and the latest lts
 language: node_js
 node_js:
+  - "9.4.0"
+  - "8.9.4"
   - "8.4"
   - "6.11"
 install:
