Eliminated illuminant scaling.  No longer needed with RGB display model.
Fixed gamma problem.

Signed-off-by: Brian A. Wandell <wandelL@stanford.edu>
OLED display example from Emily Cooper and HJ.

Signed-off-by: Brian A. Wandell <wandelL@stanford.edu>
Ignoring built mex files for Penn cluster.  Probably these are machine specific.

Signed-off-by: David Brainard <brainard@psych.upenn.edu>
Comment for gamma
Update README.md
Merge branch 'master' into conemodel