Use node-ssdp 0.2.0 to make bunyan dependencies optional

With the latest version of Node (v0.11.x), various C++ extensions break due to a direct dependency on a V8 HandleScope. node-ssdp has a dependency on bunyan which has a dependency on dtrace-provider which breaks the install process for this extension on newer versions of node.

The latest versions of node-ssdp and bunyan make dtrace-provider optional which allows the install to continue.