proxy support

[advatar]

At the moment there is no support for running behind a proxy. Maybe this could be added to config.json with a fallback to $http_proxy?

[MeanderingCode]

I agree that this would be good.
In the mean time, is it possible to use a tsocks or similar approach like LD_PRELOAD library loading? I don't know much about threading and environment inheritance and am new (read: starting to play with this project) to node.js, so info here or messaged to me if more appropriate would be appreciated.

[advatar]

i used node-tunnel to fix node-request and node-oauth. will request a pull later