Specs satisfying the `Alamofire` dependency were found, but they required a higher minimum deploymen
podfile文件platform:ios,‘7.0’use_frameworks!target“swift”dopod'Alamofire','~>4.2.0'pod'MJRefresh','~>3.1.12'pod'SDWebImage','~>4.0.0-beta2'pod'SVProgressHUD','~>2.0.4'end用podinstall时报错Invalid`Podfile`fi