code: function buildUploadURL(url, uuid, expiration, hmac, filename) {
    return url + '?uuid=' + uuid + '&expiration=' + expiration + '&hmac=' + hmac + '&file=' + filename;
  }
docs: buildUploadURL
  Construct a string using params
  @param  {String} url
  @param  {String} uuid
  @param  {String} expiration
  @param  {String} hmac
  @param  {String} filename
  @return {String}