1.在.podspec同一目录下添加.swift-version文件

2.升级到最新的cocoapods版本(1.1.0.rc.2)

sudo gem install cocoapods --pre

查看当前版本

pod --version

1.1.0.rc.2

3.Command Line Tools选择Xcode8.0

Command Line Tools

最后执行

 pod spec lint

-> OMExtension (1.1.1)

Analyzed 1 podspec.

OMExtension.podspec passed validation.

卸载cocoapods最新版的方法

OctMon$ sudo gem uninstall cocoapods

Select gem to uninstall:

1. cocoapods-1.0.1

2. cocoapods-1.1.0.rc.2

3. All versions

> 2

Successfully uninstalled cocoapods-1.1.0.rc.2