[Bf-docboard] Node editor docs

[Joe Eagar]

Hi.  As some of you may remember, I volunteered to write the node editor 
manual section last year.  After writing some stuff in the Tutorials 
section on the wiki, I realized that I needed to wait for the node 
features to stabilize before continuing.  Well, that's happened.

My plan is to complete the reference section I started (including making 
sure it conforms to the manual style guides) and (if time permits) write 
a series of tutorials about using both node shaders and the the 
compositor.  You can see the reference section I'm working on at 
http://mediawiki.blender.org/index.php/Tutorials/Nodes_Tutorial_Ref .  
The actual tutorial I started is *way* too complex, so I'll be scrapping 
that (no fault of ZanQdo who kindly provided me with his .blend to 
disect, I asked for something complex, and well I got it -- bad call on 
my part).

Tutorials are something I'm still new at (not to mention the fact that 
my free time will evaporate in a week), so if anyone wishes to write 
node tutorials for this, that would be great.  My plan (in terms of 
tutorial topics) was to write two node shader and three compositor 
tutorials.  The topics covered would be:

Shader nodes:
* Blending two materials
* Color-correcting a material with RGB curves.

Compositor nodes:
* Soft-glow effect (possibly the method used in ED :) ).
* Z-based mist effect.
* Z-based DOF effect.

joeedh