DOC: copyright year --> 2013
Merge branch 'copyright-2013'

* copyright-2013:
  DOC: copyright year --> 2013
Merge pull request #254 from jeremygray/master

update copyright year
DOC: fine-tune the coder demo style-guide for #248
Merge pull request #255 from jeremygray/master

DOC: fine-tune style-guide for OpenHatch based on feedback
ENH: added the basic hooks for an ExpFile object in Builder Experiments

The ExpFile represents a psyexp file on disk and simply writes the code
represented by that experiment's Flow in the appropriate places in its
own experiment code.

As yet, this is untested and we need to work out how to specify filename
from the GUI and when to read in the file (e.g. should we reload from disk each
time we're asked to generate code?)