解决The version of CocoaPods used to generate the lockfile (1.1.1) is higher than the version of...的问题

执行pod install时，提示如下信息

The version of CocoaPods used to generate the lockfile (1.1.1) is higher than the version of the current executable (1.0.0). Incompatibility issues may arise.

这是因为当前CocoaPods版本低了

解决方法：

执行：pod repo update 命令更新资源库即可。