[Nodeshot] 3d visualization

[Gioacchino Mazzurco]

Hi!

following #battlemesh on twitter i got this foto 
https://twitter.com/battlemesh/status/460519008249200640/photo/1

it would be veri nice to have something like that in nodeshot

Moreover i have written a script that taking a panorama and a reference point 
can generate a panorama with azimuth

http://efesto.eigenlab.org/~gioacchino/panorama_azimuth.png

it would be spectacular to have something like that + nodes marker in nodeshot 
:)