参考：https://www.jianshu.com/p/5bc406d1a57b
https://www.jianshu.com/p/5ab1e6d9ddc3
主要步骤
将代码提交到github，并生成release版本
创建podspec文件，修改其中参数信息
pod spec lint 验证是否配置正确（可用pod lib lint xxxxx.podspec --verbose查看具体错误）
推送到cocoapod, pod trunk push --allow-warnings
其它
s.source = { :git => '～/code/320Categories' }.
lipo -create /Users/qitmac000370/Library/Developer/Xcode/DerivedData/YSBaseFramework-dbcffnwlbtqtzacfzofiiocdbeux/Build/Products/Debug-iphonesimulator/libYSBaseFramework.a /Users/qitmac000370/Library/Developer/Xcode/DerivedData/YSBaseFramework-dbcffnwlbtqtzacfzofiiocdbeux/Build/Products/Debug-iphoneos/libYSBaseFramework.a -output /Users/qitmac000370/Library/Developer/Xcode/DerivedData/YSBaseFramework-dbcffnwlbtqtzacfzofiiocdbeux/Build/Products/Debug-iphonesimulator/YSBaseFramework.a