Only node 6 added.

Giedrius Grabauskas · Giedrius Grabauskas · commit 18e846638d0e · 2016-08-08T03:51:14.000+03:00
diff --git a/package.json b/package.json
@@ -39,5 +39,8 @@
   "dependencies": {
     "glob": "^7.0.5",
     "yargs": "^4.8.1"
+  },
+  "engines": {
+    "node": ">=6.0.0"
   }
 }
