code: function(cb_) {
        console.log('Downloading: ' + THRUST_RELEASE_URL);
  
        var itv = setInterval(function() {
          process.stdout.write('.');
        }, 1000);
        var finish = function(err) {
          clearInterval(itv);
          process.stdout.write('\n');
          return cb_(err);
        }
  
        request(THRUST_RELEASE_URL)
          .on('error', finish)
          .on('end', finish)
          .pipe(fs.createWriteStream(path.join(THRUST_PATH, 
                                               THRUST_RELEASE_FILENAME)));
      }
docs: /* Download THRUST