fix: allow node v4 (gajus#203)

mkwtys · gajus · commit 66d04e89a308 · 2017-03-07T16:05:59.000Z
- https://github.com/eslint/eslint/blob/master/package.json#L119 - https://github.com/babel/babel-eslint/blob/master/package.json#L34
diff --git a/package.json b/package.json
@@ -25,7 +25,7 @@
     "semantic-release": "^6.3.2"
   },
   "engines": {
-    "node": ">6.0.0"
+    "node": ">=4"
   },
   "keywords": [
     "eslint",
