class Thor::Group

def class_options_help(shell, ungrouped_name=nil, extra_group=nil) #:nodoc:

:nodoc:

shown recursively when invoking a generator.
Overwrite class options help to allow invoked generators options to be 
def class_options_help(shell, ungrouped_name=nil, extra_group=nil) #:nodoc:
  group_options = {}
  get_options_from_invocations(group_options, class_options) do |klass|
    klass.send(:get_options_from_invocations, group_options, class_options)
  end
  group_options.merge!(extra_group) if extra_group
  super(shell, ungrouped_name, group_options)
end