ENYO-1420: trap caolan/request Exceptions as Error's

- Do to consider the 'end' of the ZIP InputStream as a successful
  answer from PhoneGap Build.

Enyo-DCO-1.1-Signed-off-by: Francois-Xavier KOWALSKI <francois-xavier.kowalski@hp.com>
Merge pull request #3 from enyojs/ENYO-1420

ENYO-1420: trap caolan/request Exceptions as Error's