fix isdiscrete logic check in simulate (and save a few calls to getSampl...

...eTime).  turns out this was never working correctly for simulink models because of the previous transpose bug
that was the line i deleted (because the date was wrong).  i added the full ref.

On Sep 14, 2014, at 8:59 AM, Scott Kuindersma <notifications@github.com> wrote:

> In examples/Atlas/runAtlasWalking.m:
> 
> >  
> > -% see Kuindersma, Permenter, Tedrake, ICRA 2011 
> 2014*
> 
> —
> Reply to this email directly or view it on GitHub.
>