updated scripts, added public data folder, revised README file, etc -KL

Added Locey-White_2013.py, which conducts all analyses and generates all graphs in Locey and White (2013); replaces get_macrostates.py. Removed unnecessary files (e.g. recursives.py and Cython setup files). Updated README file with section describing files and folders. Added module FEASIBLE_FUNCTIONS (if user wants to use Cython); user can also simply use feasible_functions.py.