Add Node.js 12 to testing (#5)

coreyfarrell · sindresorhus · commit d605421c22d5 · 2019-04-27T17:02:35.000+07:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,5 @@
 language: node_js
 node_js:
+  - '12'
   - '10'
   - '8'

-Original file line number
+Diff line change
@@ @@ -1,4 +1,5 @@ @@
 language: node_js
 node_js:
 +  - '12'
   - '10'
   - '8'