Results dir now called results rather than data.

* results generated by user experiments renamed to results

* results generated by the tests renamed to testResults

* both of these changes reflected in the config files

* added README.md files in both directories, git doesn't allow
  tracking empty directories
Made default number of gpus = 0.
Added .gitignore to results dirs.

So it knows to ignore everything that gets created in those dirs.
Got non-gpu neural sims working to an extent.

* The data still doesn't quite line up with the GPU runs. Soooon.