Corrected engine section, added Travis-CI node v5

.travis.yml

@@ -3,6 +3,7 @@ language: node_js
 
 node_js:
   - "4"
+  - "5"
   - "6"
   - "stable"
 

package.json

@@ -12,7 +12,7 @@
     "js obfuscator"
   ],
   "engines": {
-    "node": ">=4.7"
+    "node": ">=4.3.0"
   },
   "main": "dist/index.js",
   "bin": {