Changed sleep time from 5 to 10
Removed .sh LSF file
Whitespace fixes to nbd_linear_model
Prior for parallel model and shared params

The shared parameters (in nbd_model_shared) are given a prior
centered on 1 (in linear parameter space) but with a fairly wide
variance (SD = 0.33, Var = 0.1).

The parallel model rate parameters are given a uniform prior ranging from
-5 to 0 in log space. It seemed that the integrator was failing to converge
when parameters were going off the deep end.

The new nbd_mcmc_parallel_....pck file has random initial values in the
range -4, 0, instead of -5, 0, as it seemed like starting below -4 drastically
slowed convergence.
Cleaned up extra comments and junk from nbd_mcmc
Eliminated sleep statements and warmups from nbd_mcmc_lsf

running "export PYTHONCOMPILED=/tmp" seems to have fixed the problem,
so these are hopefully not necessary.