Build: run tests on Node 11 (#11008)

not-an-aardvark · web-flow · commit 6e1c5306c4bd · 2018-10-23T15:24:18.000-04:00
Node 11 came out today. This adds it to the Travis build config.
diff --git a/.travis.yml b/.travis.yml
@@ -4,6 +4,7 @@ node_js:
     - "8"
     - "9"
     - "10"
+    - "11"
 sudo: false
 branches:
     only:
