diff --git a/README.md b/README.md
index e1a63c2ea12c96aa2962c3b9daff6662d390c1d1..0ca1a28cf03e29e1065bde444b3fbbaf2feb91fd 100644
--- a/README.md
+++ b/README.md
@@ -378,8 +378,9 @@ Know more about TAP: [Why I use Tape Instead of Mocha & So Should You](https://m
 
 # Version History
 
-## v0.1.3 (master)
+## v0.1.6 (master)
 1. add a watchdog to restore from unknown state
+2. add support to download image message by `ImageMessage.readyStream()`
 
 ## v0.1.1 (2016/6/10)
 1. add support to save & restore wechat login session
diff --git a/doc/webwxapp.js b/doc/webwxapp.js
index b7b10a22aa74b1deb9ac5473f66559a87400c5cb..c1b498b9c28720ab7f661771406b54a78e6b988e 100644
--- a/doc/webwxapp.js
+++ b/doc/webwxapp.js
@@ -2833,7 +2833,18 @@ angular.module("Services", []),
 }(),
 !function() {
     "use strict";
-    angular.module("Services").factory("chatroomFactory", ["$rootScope", "$timeout", "$http", "$q", "contactFactory", "accountFactory", "emojiFactory", "confFactory", "utilFactory", "reportService", "mmHttp", function(e, t, o, n, r, a, i, c, s, l) {
+    angular.module("Services").factory("chatroomFactory", ["$rootScope", "$timeout", "$http", "$q", "contactFactory", "accountFactory", "emojiFactory", "confFactory", "utilFactory", "reportService", "mmHttp", function(
+        e
+        , t
+        , o
+        , n
+        , r
+        , a
+        , i
+        , c
+        , s
+        , l
+        ) {
         var u, f = {}, d = {
             setCurrentContact: function(e) {
                 u = e
@@ -8409,7 +8420,14 @@ function() {
             }
         }
     }
-    ]).config(["$sceProvider", "$httpProvider", "$logProvider", "$stateProvider", "$urlRouterProvider", "ngClipProvider", function(e, t, o, n, r, a) {
+    ]).config(["$sceProvider", "$httpProvider", "$logProvider", "$stateProvider", "$urlRouterProvider", "ngClipProvider", function(
+        e       // $sceProvider
+        , t     // $httpProvider
+        , o     // $logProvider
+        , n     // $stateProvider
+        , r     // $urlRouterProvider
+        , a     // $ngClipProvider
+        ) {
         e.enabled(!1),
         o.debugEnabled(!0),
         a.setPath(window.MMSource.copySwfPath),
@@ -8424,7 +8442,13 @@ function() {
             },
             views: {
                 navView: {
-                    controller: ["$stateParams", "chatFactory", "contactFactory", "stateManageService", "$rootScope", function(e, t, o, n, r) {
+                    controller: ["$stateParams", "chatFactory", "contactFactory", "stateManageService", "$rootScope", function(
+                        e   // $stateParams
+                        , t // chatFactory
+                        , o // contactFactory
+                        , n // stateManageService
+                        , r // $rootScope
+                        ) {
                         function a() {
                             var n = o.getContact(e.userName, "", !0);
                             r.$broadcast("root:statechange"),
diff --git a/example/image-bot.js b/example/image-bot.js
index c6d6d707c9288105b7fb4ad16b91c39ac2d096db..b5a4d83156b129fda2acd2f519f4c40af0e8d8d3 100644
--- a/example/image-bot.js
+++ b/example/image-bot.js
@@ -7,15 +7,20 @@ bot
 })
 .on('message', m => {
   console.log(`RECV: ${m}`)
+
   if (m.type() === Wechaty.Message.Type.IMAGE) {
     console.log('IMAGE url: ' + m.get('url'))
     const filename = m.id + '.jpg'
     console.log('IMAGE local filename: ' + filename)
+
     var fileStream = require('fs').createWriteStream(filename)
+
     m.readyStream()
     .then(stream => stream.pipe(fileStream))
-    .catch(e => log.error('stream error', e))
+    .catch(e => console.log('stream error:' + e))
+
   }
+
 })
 .init()
 .catch(e => console.error('bot.init() error: ' + e))
diff --git a/package.json b/package.json
index 12ba8e8dbe109b4664a35640e1d448b731eefb48..81a7b297aabc153dee9807cf5850a8a4ac7617a7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "wechaty",
-  "version": "0.1.5",
+  "version": "0.1.6",
   "description": "Wechat for Bot. (Personal Account, NOT Official Account)",
   "main": "index.js",
   "scripts": {