ModelReplicator:addNode2

[dmccloskey]

Description

Add node method that grows the layer size instead of adding a new layer with size 1

Description

• [ ] addNode2 method
• [ ] update signatures of addRandomNodes and other methods that implement the modifications on the model.
• [ ] update signatures of examples

Validaiton

• [ ] addNode2 tests
• [ ] updated tests for affected classes