add node 6 in .travis.yml

bertho-zero · bertho-zero · commit 5033df42ceea · 2017-05-21T23:17:58.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,6 +5,7 @@ language: node_js
 node_js:
   - "4"
   - "5"
+  - "6"
   - "stable"
 
 addons:
