Would be nice if example notebooks were more verbose

[JohnHadish]

Just a minor suggestion, it is nice when functions that take more than a few seconds have verbose output. When running examples, it is nice to have some feedback that what you are doing is working. Your BorutaProspector has a verbose option already it looks like, it would be nice if it was turned on by default in the example notebook:

verbose=1

https://github.com/SystemsGenetics/GSForge/blob/master/GSForge/operations/prospectors.py#L169-L173

Also, consider adding verbose options for other operations that have max_itrer or n_iterations parameters. It is nice to see how things are running.