module Thor::Actions::ClassMethods

def add_runtime_options!
  class_option :pretend, :type => :boolean, :aliases => "-p", :group => :runtime,
                         :desc => "Run but do not make any changes"
  class_option :force, :type => :boolean, :aliases => "-f", :group => :runtime,
                       :desc => "Overwrite files that already exist"
  class_option :skip, :type => :boolean, :aliases => "-s", :group => :runtime,
                      :desc => "Skip files that already exist"
  class_option :quiet, :type => :boolean, :aliases => "-q", :group => :runtime,
                       :desc => "Supress status output"
end