jxc commands do not work from behind a corporate proxy

I am trying to use jxc to download,unpack and add the jxcore-cordova plugin to my cordova project.
I am inside my cordova application folder and executed the below command:

jxc install

and I get the following error:
{ [Error: connect ETIMEDOUT] code: 'ETIMEDOUT', errno: 'ETIMEDOUT', syscall: 'connect' }

This is a proxy issue as I am behind a corporate proxy server.
Any suggestions to fix this ?
