[sbml-render] Second draft of the render spec

[Sarah K. <ske...@ca...>]

Hi People

So I finally looked at Lucian's comments and fixed typos, added further 
text to some things etc.

I created a spreadsheet of the comments. Green means it is done. The 
other things are outstanding and require input from other people.

https://docs.google.com/spreadsheets/d/1OSDwOrK0YHE-RlXzHh1n5YzIrUDT-ZdYITWwgVeSwyk/edit?usp=sharing

The result so far is here:

https://sourceforge.net/p/sbml/code/24316/tree//trunk/specifications/sbml-level-3/version-1/render/render-version-1-draft-2.pdf

We definitely do need more examples of xml and the resulting 'drawing' :-)

Sarah