diff --git a/README.md b/README.md
index d98f4d3..671d3a5 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,14 @@ $ ntrans chrome
  翻译：n. 铬，铬合金；铬黄；谷歌浏览器
 ```
 
+## Develop
+
+`node-translator` has been refactored with ECMAScript 6 using [babeljs](https://babeljs.io).
+
+1. Clone the project from github
+2. Run `npm install` to install dependencies
+3. Run `npm run build` to build package from ES6, or just run `npm run build-watch`
+
 ## License
 
 The MIT License
diff --git a/bin/ntrans b/bin/ntrans
index 5f3dfc9..ed1b067 100644
--- a/bin/ntrans
+++ b/bin/ntrans
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 
-var pkg = require('../index');
+var pkg = require('../compiled');
 
 var param = process.argv[2] ? process.argv[2] : '';
 
diff --git a/compiled.js b/compiled.js
new file mode 100644
index 0000000..74e691c
--- /dev/null
+++ b/compiled.js
@@ -0,0 +1,66 @@
+'use strict';
+
+var _interopRequireWildcard = function (obj) { return obj && obj.__esModule ? obj : { 'default': obj }; };
+
+Object.defineProperty(exports, '__esModule', {
+  value: true
+});
+
+// Module dependencies
+
+var _request = require('request');
+
+var _request2 = _interopRequireWildcard(_request);
+
+var _program = require('commander');
+
+var _program2 = _interopRequireWildcard(_program);
+
+var _lib = require('./lib');
+
+var _lib2 = _interopRequireWildcard(_lib);
+
+var _config = require('./config');
+
+var _config2 = _interopRequireWildcard(_config);
+
+var _pkg = require('./package.json');
+
+var _pkg2 = _interopRequireWildcard(_pkg);
+
+'use strict';
+exports['default'] = function (params) {
+
+  _program2['default'].version(_pkg2['default'].version).usage('[word to be translated]');
+
+  _program2['default'].on('--help', function () {
+    console.log('  Example:');
+    console.log('\n  $ ntrans professor\n');
+  });
+
+  _program2['default'].parse(process.argv);
+
+  if (params.length === 0) {
+    _program2['default'].help();
+
+    return;
+  }
+
+  _request2['default'](_config2['default'].src + encodeURIComponent(params), function (err, res, body) {
+    var data;
+
+    if (!err && res.statusCode === 200) {
+      data = JSON.parse(body);
+
+      if (data.errorCode == 0) {
+        _lib2['default'].output(data);
+      } else {
+        console.log('[ERROR]'.red + ' Youdao API request error.');
+      }
+    } else {
+      console.log('[ERROR]'.red + ' Youdao API request error.');
+    }
+  });
+};
+
+module.exports = exports['default'];
diff --git a/config.js b/config.js
index d1d04e5..645fb48 100644
--- a/config.js
+++ b/config.js
@@ -1,3 +1,3 @@
 module.exports = {
     "src": "http://fanyi.youdao.com/openapi.do?keyfrom=node-translator&key=2058911035&type=data&doctype=json&version=1.1&q="
-}
+};
\ No newline at end of file
diff --git a/index.js b/index.js
deleted file mode 100644
index 2b69733..0000000
--- a/index.js
+++ /dev/null
@@ -1,41 +0,0 @@
-// Entrance of the package
-//
-// Module dependencies
-var request = require('request'),
-    program = require('commander');
-
-var lib = require('./lib'),
-    url = require('./config').src;
-
-module.exports = function(param) {
-
-  program
-    .version('0.1.3')
-    .usage('[word to be translated]');
-
-  program.on('--help', function() {
-    console.log('  Example:');
-    console.log('\n  $ ntrans professor\n');
-  });
-
-  program.parse(process.argv);
-
-  if (param.length === 0) {
-    program.help();
-
-    return;
-  }
-
-  request(url + encodeURIComponent(param), function(err, res, body) {
-    var data;
-
-    if (!err && res.statusCode === 200) {
-      data = JSON.parse(body);
-      if (data.errorCode == 0) {
-        lib.output(data);
-      } else {
-        console.error('[ERROR]'.red + ' Youdao API request error.');
-      }
-    }
-  });
-};
diff --git a/package.json b/package.json
index 5c395f1..bfa536e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ntrans",
-  "version": "0.2.2",
+  "version": "0.3.0",
   "description": "Yet another Chinese-English translation tool written in Node.",
   "main": "index.js",
   "repository": {
@@ -10,26 +10,30 @@
   "keywords": [
     "translate",
     "fanyi",
-    "youdao"
+    "youdao",
+    "dictionary"
   ],
   "author": [
     {
       "name": "fantasy",
-      "email": "fantasyshao@icloud.com",
-      "url": "http://fantasy.codes"
-    },
-    {
-      "name": "galeno",
-      "email": "lenghan1991@gmail.com"
+      "email": "forever.fantasy27@gmail.com",
+      "url": "http://blog.fantasy.codes"
     }
   ],
   "bin": {
     "ntrans": "./bin/ntrans"
   },
+  "scripts": {
+    "build": "./node_modules/.bin/babel source.es6 --out-file compiled.js",
+    "build-watch": "./node_modules/.bin/babel source.es6 --out-file compiled.js --watch"
+  },
   "license": "MIT",
   "dependencies": {
     "colors": "^1.0.3",
     "commander": "^2.5.0",
     "request": "^2.51.0"
+  },
+  "devDependencies": {
+    "babel": "^5.1.11"
   }
 }
diff --git a/source.es6 b/source.es6
new file mode 100644
index 0000000..4f3c6ae
--- /dev/null
+++ b/source.es6
@@ -0,0 +1,46 @@
+'use strict';
+
+// Module dependencies
+import request from 'request';
+import program from 'commander';
+
+import lib from './lib';
+import config from './config';
+import pkg from './package.json';
+
+export default function (params) {
+
+  program
+    .version(pkg.version)
+    .usage('[word to be translated]');
+
+  program.on('--help', () => {
+    console.log('  Example:');
+    console.log('\n  $ ntrans professor\n');
+  });
+
+  program.parse(process.argv);
+
+  if (params.length === 0) {
+    program.help();
+
+    return;
+  }
+
+  request(config.src + encodeURIComponent(params), (err, res, body) => {
+    var data;
+
+    if (!err && res.statusCode === 200) {
+      data = JSON.parse(body);
+
+      if (data.errorCode == 0) {
+        lib.output(data);
+      } else {
+        console.log('[ERROR]'.red + ' Youdao API request error.');
+      }
+    } else {
+      console.log('[ERROR]'.red + ' Youdao API request error.')
+    }
+  });
+
+}