enabled docker service

fehguy · fehguy · commit 08816ad71806 · 2017-04-11T15:30:12.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,8 @@
 language: node_js
 node_js:
 - '6.9'
+services:
+  - docker
 branches:
   only:
   - master
