Etienne 3d objs

- meta for 'scatter3d', 'surface', 'scene', 'zaxis', and 'error-z', 
good point, but I don't think that's available 
![image](https://cloud.githubusercontent.com/assets/6675409/4583655/b9e86cea-4ff3-11e4-8a7e-1435470cfddf.png)