Server not seen outside of the local machine

[LudekStoklasa]

Nice project, but in my case the server wasn't seen on network (only on the PC where it runs).

This was combination of two issues with included node-ssdp module:

1. Multiple NICs support , this was reported as issue #34 and fixed by this commit
   i.e. solution is to change node-ssdp version in package.json to the latest

2. Need for supplying sourcePort:1900 to SSDP server (issue #75)
   i.e. I added sourcePort: 1900, to the config object that is supplied to the constructor later new SSDP.Server(config)

Hope this helps and can be pushed into this project to save everyone's time ;-)