module Thor::Base::ClassMethods

:banner - String to show on usage notes.
:type - The type of the argument, can be :string, :hash, :array, :numeric or :boolean.
:aliases - Aliases for this option.
:group - The group for this options. Use by class options to output options in different levels.
:default - Default value for this argument.
:required - If the argument is required or not.
:desc - Description for the argument.
==== Options

options:: Described below.
name:: The name of the argument.
==== Parameters

Adds an option to the set of class options

def class_option(name, options={})
  build_option(name, options, class_options)
end