commented out warning
fixed add_cpd and get_cpd
commented out code which needs to be fixed
fixed get_parents of Bayesian Model
fixed moral_graph method
fixed get_ancestors_of active_trail_nodes and is_active_trail methods of Bayesian Model
minor fix
fixed docs
fixed tests
fixed BayesianModel
Merge pull request #218 from ankurankan/uniform_bayes_markov

fixed bayesian model