parser

type Option struct {
	Flag      string
	Value     interface{}
	Required  bool
	Default   string
	Help      string
	ShortFlag string
	Type      string
	IsPath    bool
}

type Options struct {
	OptionsList OptionsList
	Parser      Parser
}

type OptionsList []*Option

type Parser interface {
	Parse(*Options) (*feeds.Feed, error)
	GetOptions() Options
	String() string
}