Finalise how sendSamples behaves

[raacampbell]

e.g. if no input args should it present a random stimulus? What input options are needed?

[raacampbell]

It now does:

% Inputs [param/value pairs]
% 'ConditionNum' - Integer but empty by default. This is the index of the condition number to
%                  present. If empty a random one is chosen.
% 'laserOn' - [bool, true by default] If true the laser is on. If false the galvos move but laser is off.
%              If empty, a random laser state is chosen.
% 'hardwareTriggered' [bool, true by default] If true the DAQ waits for a hardware trgger before 
%                   presenting the waveforms. 
% 'verbose' - [bool, false by default] If true print debug messages to screen.

See fa9b6e6
Confirm with users that this is ok.

[raacampbell]

Yes, this is OK. (at least for now)