zipper - file compression api for your files at Amazon S3 - feedback/code review/contributions wanted

[Renato M. da Gama]

Hey guys, I have just create this thing that 

0- receives zipping request and adds your job to a queue 

1- downloads your files from amazon s3, 

2- zips everything, 

3- sends back one single .zip file to amazon, 

4- triggers http notifications so you know your .zip file is ready

Its entirelly written in node.js with ~500 lines of code and I would love to have some feedback/code review or even contributions.

Heres the link to my repo; https://github.com/gammasoft/zipper

Thank you for your time