fix: fix dev script.
diff --git a/gulpfile.js b/gulpfile.js
index 98c3868..9744db9 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -15,9 +15,9 @@
  * Usage:
  *
  * ```shell
- * ./nodule_modules/.bin/gulp release --env asf
- * ./nodule_modules/.bin/gulp release --env echartsjs
- * ./nodule_modules/.bin/gulp release --env dev # the same as "debug"
+ * ./node_modules/.bin/gulp release --env asf
+ * ./node_modules/.bin/gulp release --env echartsjs
+ * ./node_modules/.bin/gulp release --env dev # the same as "debug"
  * # Check `./config` to see the available env
  * ```
  * ------------------------------------------------------------------------
@@ -25,12 +25,13 @@
 
 function initEnv() {
     var envType = argv.env;
-    var isDev = argv.dev != null || argv.debug != null || envType === 'debug';
+    var isDev = argv.dev != null || argv.debug != null || envType === 'debug' || envType === 'dev';
 
     if (isDev) {
-        console.warn('=============================');
-        console.warn('!!! THIS IS IN DEV MODE !!!');
-        console.warn('=============================');
+        console.warn('====================================================================');
+        console.warn('THIS IS IN DEV MODE');
+        console.warn('!!! Please input your local host in `config/env.dev.js` firstly !!!');
+        console.warn('====================================================================');
         envType = 'dev';
     }
 
@@ -38,7 +39,16 @@
         throw new Error('--env MUST be specified');
     }
 
-    return require('./config/env.' + envType);
+    var config = require('./config/env.' + envType);
+
+    if (isDev) {
+        console.warn('====================================================================');
+        console.warn('Please visit the website: ');
+        console.warn(config.host);
+        console.warn('====================================================================');
+    }
+
+    return config;
 }
 
 var config = initEnv();
diff --git a/package.json b/package.json
index 91a83ed..c606b5e 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,9 @@
   "name": "echarts-examples",
   "version": "0.0.0",
   "private": true,
+  "scripts": {
+    "dev": "./node_modules/.bin/gulp release --env dev"
+  },
   "devDependencies": {
     "app-module-path": "^2.2.0",
     "argparse": "^1.0.9",