old_contents: var download = require('./download.js');
  var minimist = require('minimist');
  var argv = require('minimist')(process.argv.slice(2));
  var Step = require('step');
  
  Step(
      function() {
          download(argv, this);
      },
      function(err) {
          console.log('DONE');
          process.exit(0);
      }
  );
  
new_contents: var download = require('./download.js');
  var minimist = require('minimist');
  var argv = require('minimist')(process.argv.slice(2));
  var Step = require('step');
  
  Step(
      function() {
          download(argv, this);
      },
      function(err) {
          process.exit(0);
      }
  );
  
subject: Kill superfluous output.