to turn pre-processing off use no_preprocessing

[Motorrat]

AutoSklearnClassifier( include_preprocessors=('no_preprocessing',))

It would be great to have an explicit list of preprocessors and estimators that could be used in include_preprocessors and include_estimators parameters of AutoSklearnClassifier.

[Motorrat]

candidate for the list of estimators classifier:choice, Type: Categorical, Choices: {adaboost, bernoulli_nb, decision_tree, extra_trees, gaussian_nb, gradient_boosting, k_nearest_neighbors, lda, liblinear_svc, libsvm_svc, multinomial_nb, passive_aggressive, proj_logit, qda, random_forest, sgd}

[mfeurer]

Documented in #273. Will be merged to development/master soon.