Davidl/headless

[davidandresleon]

-slightly modified init.py to include Rhino module in globals in order to be able to call it from another context
-uploaded gh-headless example based on RunHelper example.

[sbaer]

@davidandresleon why did you have to modify init.py? Were things not working without this modification?

[davidandresleon]

@sbaer I sure tried to avoid it, but that´s the only way I could make Grasshopper load headless, by bringing the Rhino module that loads RhinoCore in init.py into the scope that imports Grasshopper.

I believe the changes made in init.py are not substantial enough to mess with current functionality, but of course I could be wrong.

If you know a better way to approach this or feel uneasy about changing init.py, please feel free to reject this PR and let me know!

[sbaer]

My only issue with this is that I don't understand why it works one way and not the other.

[davidandresleon]

I wish I could tell you why... I only know it works only if I a) reference the Rhino module set as global in __init__. py(as in the PR) or b) initialize RhinoCore from the example file instead of __init__. py. I'll try to find out more, any help ideas would be very much welcome.

[davidandresleon]

one more thing. when running the script with the current init, it the issue arrises when calling Grasshopper.Kernel.GH_DocumentIO() which is the first call to the Grasshopper module