Updated model after 2013 08 14 discussion
Now using names for parameters
Sensible configuration defaults
Tweaked fit parameters. Plot perception distribution.
Added comments.
Process all participants.
Added memory parameter
Added memory parameter
Remove warning off
Updated trial explorer
Improved plotting model simulations
Removed obsolete function calls.
Changed directory structure.
Merge pull request #5 from iclemens/model_update_2013_08_14

Model update 2013 08 14