changed repo. structure

primo/core/BayesNet.py

primo/core/DynamicBayesNet.py

primo/core/Node.py

primo/core/__init__.py

primo/core/tests/BayesNet_test.py

primo/decision/DecisionNode.py

primo/decision/UtilityNode.py

primo/lib/networkx-1.7-py2.7.egg

primo/reasoning/DiscreteNode.py

primo/reasoning/GaussNode.py

primo/reasoning/RandomNode.py

primo/reasoning/__init__.py

primo/reasoning/density/Density.py

primo/reasoning/density/Gauss.py

primo/reasoning/density/ProbabilityTable.py

primo/reasoning/density/__init__.py