Alter MCMC_ztable to use the table function.
Code to make tables in LaTeX.
Make a compile script

Also added tables and figures to .tex document.
Remove .gitingore in manuscript/images

I decided that even though these are generated by
our R compile script, there is not much harm in having
them here.  Especially if we want to just quickly
make changes to the LaTeX doc and typeset it.
Merge branch 'master' of https://github.com/eriqande/SNPcontam

Just pulling in Elena's changes.