removed aps_gibbs
removed aps_choose_best
removed n_samples; also removed aps_runner.cpp; that file was set up to run with the s-curve likelihood function; didn't really use it any more
removed all variables associated with gibbs sampling
went back over the documentation of the public members of the aps class
minor change to some documentation
moved private methods in aps class before private variables to make documentation easier to read (I think)
removed extraneous 'find_global_minimum' functions from aps class
documented simplex_search in aps.h
documented simplex_search
documented the evaluate, and add_pt infrastructure
added reference to kd.h
documented refine_center
documented set_chimin()
documented the aps searches in aps.h
removed some extraneous code from corner_focus
documented corner_focus in aps.cpp
documented bisection in aps.h
documented bisection in aps.cpp
some minor documentation added to aps.h