CocoaPods 升级1.2.0

CocoaPods1.1.1升级到1.2.0

pod update

如果出现

Update all pods
Updating local specs repositories
warning: inexact rename detection was skipped due to too many files.

CocoaPods 1.2.0.beta.3 is available.
To update use: `gem install cocoapods --pre`
[!] This is a test version we'd love you to try.

For more information, see https://blog.cocoapods.org and the CHANGELOG for this version at https://github.com/CocoaPods/CocoaPods/releases/tag/1.2.0.beta.3

这个时候已经告诉你该怎么做了

gem install cocoapods --pre

完成后再查看你的CocoaPods版本

pod --version