Mac 搭建flutter环境

//1.下载Xcode , 最好是在appstore下载

//2.下载sdk
git clone -b beta [https://github.com/flutter/flutter.git](https://github.com/flutter/flutter.git)**

// 3.设置环境变量
    //3.1 打开  home
       输入: vim ./.bash_profile
    //3.2 (输入)  enter 
    //3.3   (输入) i
    //3.4 复制变量
      export PUB_HOSTED_URL=[https://pub.flutter-io.cn](https://pub.flutter-io.cn/)
      export FLUTTER_STORAGE_BASE_URL=[https://storage.flutter-io.cn]
      (https://storage.flutter-io.cn/) export PATH=`pwd`/flutter/bin:$PATH export 
      PATH=$HOME/flutter/bin:$PATH
  // 3.5 esc
  //3.6 :wq
  // 3.7 enter
//4. 关闭终端,重新打开
//5. 输入 echo $PATH 看看flutter 是否配置成功
//6. flutter doctor (提示找不到命令,第三步重来)
//7.直到 6 完全完成后,恭喜你已经配置成功