Specified that the module is compatible from node v4.0.0 to latest

AdrienCastex · AdrienCastex · commit bf4fd931cb2c · 2017-05-22T17:59:36.000+02:00
diff --git a/package.json b/package.json
@@ -11,7 +11,7 @@
     ]
   },
   "engines": {
-    "node": "*"
+    "node": ">= 4.0.0"
   },
   "main": "./lib/index",
   "keywords": [
