Committing files v0.1
Cleaned up comments, changed variable names, some speedups

Cleaned up comments in all files.

Changed variable names in
bayes_logit_fit.m
bayes_logit_fit_ard.m

Small speed-up by using bsxfun in
bayes_logit_fit.m
bayes_logit_fit_ard.m

Fixed minor bug in bayes_logit_fit_ard.m
Added example script