Add example to compare RELU with SELU (#6990)
Add example to compare RELU with SELU (#6990)

* Add exampe to compare RELU with SELU fchollet/keras#6924

* Add header description

* Add axes labels

* Increase size of MLP #6990

* Reduce network size, reduce dropout rate, reduce dense units

* Reduce network size, add recommendations to reduce overfitting

* Encapsulate hyperparameters and create generic network builder

* Rename file to be more descriptive

* Add @tboquet's suggestion to export to png #6990

* Docstring clean-up

* Change optimizer to sgd, increase epochs

* Update docstrings

* Fix PEP8

keras-team/keras,keras-team/keras