Add Node.js 12 test target.

davidlehn · davidlehn · commit 117f826b8149 · 2019-04-25T14:56:13.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,6 +3,7 @@ node_js:
   - "6"
   - "8"
   - "10"
+  - "12"
   - "node"
 sudo: false
 install:
