Added in intial junit template
Some additional rants XD
Initial TrainGraph implementation
Initial Node model implementation
Initial Edge and TrainGraphImpl implementation
Initial method implementation for no routes test
Added in Edge properties and constructor
Added in Node model getters and setters
Initial getDistance implementation
Added in logic for test method sendTrainExceptionIfNoEdgeExists
Initial TrainGraphException implementation
Get distance now catches no route exception
Added in distance_ABC test method