Document the commands, file formats, and interactions

[GoogleCodeExporter]

We should start writing some documentation about the commands provided
by the VM-MAD package, their interaction (e.g., run `distil.py` before
`simul.py`) and the file formats.

So, please add to the existing docs:

1. A section on the commands: for every command briefly explain the
   intended purpose and give usage notes.  Link to the "file formats"
   section when referencing the input and output files.

   Could possibly be enriched with a couple of examples and nice
   graphs, but that's optional and not really needed :-)

2. A section on file formats: we basically use CSV everywhere so
   there's not much to do here, except stating what columns are in
   each CSV file, and what's their meaning.

Original issue reported on code.google.com by riccardo.murri@gmail.com on 22 Feb 2012 at 9:57

• Blocked on: simul.py's output file should contain a CSV columns header #10