def setup_config_file(file=nil)
      if file.nil? or ! File.exists?(file)
        # config does not exist
        setup_config_dir
        dst_file = File.join(default_retrospec_dir, 'config.yaml')
        src_file = File.join(gem_dir,'config.yaml.sample')
        safe_copy_file(src_file, dst_file)
        file = dst_file
      end
      @config_file = file
    end
def setup_config_file(file=nil)
      if file.nil? or ! File.exists?(file)
        # config does not exist
        setup_config_dir
        dst_file = File.join(default_retrospec_dir, 'config.yaml')
        src_file = File.join(gem_dir,'config.yaml.sample')
        safe_copy_file(src_file, dst_file)
        file = dst_file
      end
      @config_file = file
    end
we should be able to lookup where the user stores the config map
 so the user doesn't have to pass this info each time
 create a blank yaml config file it file does not exist