update engine field

uhyo · uhyo · commit b494d5008cdf · 2018-11-28T01:42:02.000+09:00
diff --git a/package.json b/package.json
@@ -7,7 +7,7 @@
     "test": "mocha"
   },
   "engines": {
-    "node": ">= 4.0.0"
+    "node": ">= 6.0.0"
   },
   "keywords": [
     "gulpplugin",
