added BayesianModel.py to dev-branch
added BayesianModel.py to dev-branch

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