[wip]Instagram node dev

This is my attempt on the Instagram node. Current example is showing the query node. Comments are welcome. I'll squash commits once we get this work into a pullable state. Thanks
@knolleary , what do you think about using this http.get and specifying the 'binary' nature of the buffer? It will be deprecated in the future versions of node. However it isn't deprecated yet and is an easy way to buffer into memory.

There's a half-baked "buffer to disk" solution commented out. I'm not sure how I could trigger request to download to memory.

What's the best way forward here?