add README.zh.md

README.md

 # react-native-splash-screen
+
+![China.png]()[简体中文](/README.zh.md)
+
 A splash screen for react-native, hide when application loaded ,it works on iOS and Android. 
 
 ## Content

README.zh.md

+# react-native-splash-screen
+
+[English](README.md)
+
+React Native启动屏，解决iOS,Android启动白屏问题，支持Android和iOS。
+
+## Content
+
+- [安装说明](#安装说明)
+- [演示](#演示)
+- [使用说明](#使用说明)
+- [API](#api)
+- [贡献](#贡献)
+
+## 安装说明
+
+### 第一步(下载):
+在项目根目录打开终端运行 `npm i react-native-splash-screen --save`
+
+### 第二步 (安装):
+
+大家可以通过自动或手动两种方式来安装`react-native-splash-screen`。
+
+
+#### 自动安装
+
+终端运行：
+
+
+`react-native link react-native-splash-screen` or `rnpm link react-native-splash-screen`
+
+####  手动安装
+
+**Android:**
+
+1.在你的 android/settings.gradle 文件中添加下列代码:
+```
+include ':react-native-splash-screen'   
+project(':react-native-splash-screen').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-splash-screen/android')
+```
+
+2.在你的 android/app/build.gradle 文件中添加 `:react-native-splash-screen`：
+
+代码如下：
+ 
+```
+...
+dependencies {
+    ...
+    compile project(':react-native-splash-screen')
+}	
+```
+
+3.更新你的MainApplication.java 文件，如下:   
+
+```java
+public class MainApplication extends Application implements ReactApplication {
+
+    private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
+        @Override
+        protected boolean getUseDeveloperSupport() {
+            return BuildConfig.DEBUG;
+        }
+
+        @Override
+        protected List<ReactPackage> getPackages() {
+            return Arrays.<ReactPackage>asList(
+                    new MainReactPackage(),
+            new SplashScreenReactPackage()  //here
+            );
+        }
+    };
+
+    @Override
+    public ReactNativeHost getReactNativeHost() {
+        return mReactNativeHost;
+    }
+}
+```
+
+**iOS:**
+
+1. 在 XCode的项目导航视图中单击 `Libraries` ➜ `Add Files to [your project's name]`
+2. 通过下面路径找到 `SplashScreen.xcodeproj`,`node_modules` ➜ `react-native-launch-image`  ➜ `SplashScreen.xcodeproj`
+
+3.  在XCode中打开`Build Phases` ➜ `Link Binary With Libraries`将`libSplashScreen.a` 添加到你的项目中。
+
+
+
+### 第三步(配置): 
+
+**Android:**
+
+更新你的 MainActivity.java 文件如下：
+```java
+public class MainActivity extends ReactActivity {
+   @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        SplashScreen.show(this);  // 添加这一句
+        super.onCreate(savedInstanceState);
+    }
+    // ...other code
+}
+```
+
+**iOS:**
+
+更新你的AppDelegate.m 文件如下：
+
+ 
+```obj-c
+
+#import "AppDelegate.h"
+#import "RCTRootView.h"
+#import "SplashScreen.h"  // here
+
+@implementation AppDelegate
+
+- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
+{
+    // ...other code
+    
+    [SplashScreen show];  // 添加这一句，这一句一定要在最后
+    return YES;
+}
+
+@end
+
+```
+
+## Demo  
+* [Examples](https://github.com/crazycodeboy/react-native-splash-screen/tree/master/examples)
+
+![react-native-splash-screen-Android](https://raw.githubusercontent.com/crazycodeboy/react-native-splash-screen/master/examples/Screenshots/react-native-splash-screen-Android.gif)
+![react-native-splash-screen-iOS](https://raw.githubusercontent.com/crazycodeboy/react-native-splash-screen/master/examples/Screenshots/react-native-splash-screen-iOS.gif)
+
+## 使用说明  
+
+讲 `react-native-splash-screen` 导入你的JS 文件。
+
+
+`import SplashScreen from 'react-native-splash-screen'`    
+
+**Android:**
+
+创建一个名为 launch_screen.xml 的布局文件来自定义你的启动屏幕。
+
+```
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical" android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@drawable/launch_screen">
+</LinearLayout>
+```
+
+**iOS**  
+
+iOS可以通过LaunchImage或LaunchScreen.xib来自定义你的启动屏幕。
+
+最后，你可以在适当的时候关闭启动屏幕（如：启动初始化完成后）:
+
+```JavaScript
+import SplashScreen from 'react-native-splash-screen'
+
+export default class WelcomePage extends Component {
+
+    componentDidMount() {
+    	 // do anything while splash screen keeps, use await to wait for an async task.
+        SplashScreen.hide();//关闭启动屏幕
+    }
+}
+```
+
+## API
+
+
+方法            | 类型     | 可选 | 描述
+----------------- | -------- | -------- | ----------- 
+show()   | function | false | 打开启动屏幕 
+hide() |  function  | false  |  关闭启动屏幕   
+
+## 贡献
+
+欢迎大家提问题，如果能给问题加上一个截图，则是极好的。另外欢迎`Pull requests`贡献你的代码。
+
+---
+
+**MIT Licensed**