fix(travis): update supported node versions

maasencioh · web-flow · commit 4e34bd40d706 · 2016-08-08T10:11:08.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,6 @@
 language: node_js
 node_js:
-  - "0.12"
-  - "iojs"
+  - stable
+  - v6
+  - v4
 sudo: false
