diff --git a/README.md b/README.md
index fbec50e..d07c4d7 100644
--- a/README.md
+++ b/README.md
@@ -17,12 +17,12 @@ react-native link
 ```
 
 #### 手动link~（如果不能够自动link）
-#####ios
+##### ios
 a.打开XCode's工程中, 右键点击Libraries文件夹 ➜ Add Files to <...>
 b.去node_modules ➜ react-native-weibo ➜ ios ➜ 选择 RCTWeiboAPI.xcodeproj
 c.在工程Build Phases ➜ Link Binary With Libraries中添加libRCTWeiboAPI.a
 
-#####Android
+##### Android
 
 ```
 // file: android/settings.gradle
@@ -76,11 +76,14 @@ public class MainApplication extends Application implements ReactApplication {
 #### ios配置
 将`node_modules/react-native-weibo/ios/libWeiboSDK/WeiboSDK.bundle`加入到工程中(必须，很重要，不然登录的时候会crash)
 
+在Build Phases ➜ Copy Bundle Resources ➜ Add Other...  libWeiboSDK/WeiboSDK.bundle
+
 在工程target的`Build Phases->Link Binary with Libraries`中加入`libRCTWeiboAPI.a、libsqlite3.tbd、libz.tbd、ImageIO.framework、SystemConfiguration.framework、Security.framework、CoreTelephony.framework、CoreText.framework`
 
 
 在`Info->URL Types` 中增加QQ的scheme： `Identifier` 设置为`sina`, `URL Schemes` 设置为你注册的微博开发者账号中的APPID，需要加前缀`wb`，例如`wb1915346979`
 
+
 在你工程的`AppDelegate.m`文件中添加如下代码：
 
 ```
diff --git a/index.js b/index.js
index 5d1ca37..527a63b 100644
--- a/index.js
+++ b/index.js
@@ -3,7 +3,6 @@
  */
 
 import {NativeModules, NativeAppEventEmitter} from 'react-native';
-import promisify from 'es6-promisify';
 
 const {WeiboAPI} = NativeModules;
 
@@ -33,6 +32,14 @@ function wrapApi(nativeFunc) {
     };
 }
 
+function promisify(fn, handler) {
+    return function (...args) {
+        return new Promise(function (resolve, reject) {
+            fn(...args, handler.bind({ resolve, reject }))
+        })
+    }
+}
+
 // Save callback and wait for future event.
 let savedCallback = undefined;
 function waitForResponse(type) {
diff --git a/package.json b/package.json
index 5bc592b..bde9933 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,6 @@
   },
   "homepage": "https://github.com/reactnativecn/react-native-weibo#readme",
   "dependencies": {
-    "es6-promisify": "^3.0.0"
+
   }
 }