1.Add team member(admin) --(苹果开发认证账号)
2.create a certificate signing request(member) --(CSR--certifacate signing request)
3.download a certificate(member) --(WWDR-苹果颁发的中级证书)
4.Add devices(admin)
5.create an app Id(admin) -应用程序的id
6.create a provisioning profile(admin)--配置信息文件
7.download the provisioning profile(member)