React Native 第一天

1.安装react-native 命令行管理工具：npm install -g yarn react-native-cli    npm>=4.5

2.创建项目react-native init 项目名 

3.react-native run-android 运行项目           

4.react-native splash-screen 安装  参考  https://github.com/react-native-component/react-native-smart-splash-screen