added docstring for __init__.py for BayesianModel; modified lists to generators in the TODO areas
added docstring for __init__.py for BayesianModel; modified lists to generators in the TODO areas

jhonatanoliveira/pgmpy,pratyakshs/pgmpy,kislayabhi/pgmpy,yashu-seth/pgmpy,kris-singh/pgmpy,anaviltripathi/pgmpy,abinashpanda/pgmpy,sandeepkrjha/pgmpy,kislayabhi/pgmpy,pgmpy/pgmpy,ankurankan/pgmpy,palashahuja/pgmpy,pratyakshs/pgmpy,sandeepkrjha/pgmpy,liquidmetal/pgmpy,yashu-seth/pgmpy,ankurankan/pgmpy,pgmpy/pgmpy,liquidmetal/pgmpy,khalibartan/pgmpy,vivek425ster/pgmpy,khalibartan/pgmpy,jhonatanoliveira/pgmpy,vivek425ster/pgmpy,kris-singh/pgmpy,abinashpanda/pgmpy,anaviltripathi/pgmpy,palashahuja/pgmpy