add node v6

SBoudrias · SBoudrias · commit f668360ee847 · 2016-05-03T00:34:16.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,3 +5,4 @@ node_js:
   - v0.12
   - v4
   - v5
+  - v6

-Original file line number
+Diff line change
   - v0.12
   - v4
   - v5
 +  - v6