add mongoDb to travis.yml

Jrschellenberg · Jrschellenberg · commit 728c373ff995 · 2018-03-23T14:59:27.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,3 +1,5 @@
 language: node_js
 node_js:
-  - "stable"
+  - "stable"
+services:
+  - mongodb
