Add Node.js v6 series as testing environment

kuy · kuy · commit 5a4d3d428e86 · 2016-09-14T11:56:31.000+09:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,6 +5,7 @@ sudo: true
 node_js:
   - "4"
   - "5"
+  - "6"
 
 before_install:
   - mkdir travis-phantomjs
