add node12 to travis build (#925)

Zoltan Erdos · johnnyreilly · commit 0fd623fe9001 · 2019-04-25T11:21:11.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,6 +7,7 @@ node_js:
   - "8"
   - "10"
   - "11"
+  - "12"
 sudo: required
 install:
   - yarn install
