download script not working about node-gtfs

[youtux]

I think I've found the problem: that commit moves the importFiles function outside of downloadFiles, but importFiles still uses the cb variable in this line:

function processFile(e, response, body){
  // ...
  .pipe(unzip.Extract({ path: downloadDir }).on('close', cb))
  // ...

this cb variable should be the one provided by the async.series call, but instead processFile will call the cb given from

// ...
function downloadGTFS(task, cb) {
// ...

resulting in a premature end of the script, namely all the other steps defined in the async.series will not be executed.