code: function copyFile (fname, dirname, cb) {
      target.name = path.join(dirname, path.basename(file.name) )
      try {
        var readStream = fs.createReadStream(file.name)
          , writeStream = fs.createWriteStream(target.name, { mode: file.mode })
        readStream.pipe(writeStream)
        readStream.on('end', function () {
          cb(null, fname)
        })
      } catch (err) {
        return cb(err) // Could add more info
      }
    }
docs: ////////////////////////////////// ## UTILITY FUNCS //////////////////////////////////  ## COPYFILE ## adds filename to bin path then creates stream objects and calls pump to pump the bits over.