Fixed small bug in coneSet, re peak efficiency
Edited rod absorption script to use coneSet.  Still not really checked.
Merge branch 'dev' of https://github.com/isetbio/isetbio into dev
Merge branch 'dev' of https://github.com/isetbio/isetbio into dev
Merge branch 'dev' of https://github.com/isetbio/isetbio into dev
Comments, changed 'cubic' to 'pchip' as per Mathworks.  Changed wavelength range to 400:5:700