Updated Worklog
Changed simulate_genos so that loci are sampled with replacement.  Deleted unecessary code in contam_MCMC. Changed outputs in test_MCMC so that it matches the needs of the simulation.
Created MCMC_sims and MCMC_plots.  The former runs the simulation and the latter makes the plots using the simulation data.  MCMC_plots only includes code for the z posterior means box plots right now.
Merge branch 'master' of https://github.com/eriqande/SNPcontam