added comment about readtable in R2016A
added comment about readtable in R2016A

readtable works slightly different in MATLAB R2016A. Added a comment
that includes which line you should run for R2016A vs earlier versions.
The earlier version line is currently being executed.

shayqn/TwoArmedBandit-3PortNosePoke-behaviorCode,shayqn/TwoArmedBandit-3PortNosePoke-behaviorCode