files for the NatImExperiment
Merge pull request #1 from leongatys/master

Added NatImExperiment and update to WNOriDetect
Merge branch 'master' of https://github.com/gdenfield/stim_ae

Note: these are changes in Leon's code that were accidentally committed by George

Conflicts:
	exp/@NatImExperiment/netShowStimulus.m
	exp/@NatImExperiment/netStartSession.m
	rand/@NatImRandomization/init.m
Removed unused code
Removed catch trials from conditions

Catch trials are now determined when nFramesPre is drawn: it's a catch
trial if nFramesPre > nFramesPreMax.
Merge pull request #3 from aecker/catchtrials

Better handling of catch trials