fixing the names SimpleRNNLearner and AutoencoderLearner (#1125)
fixing the names SimpleRNNLearner and AutoencoderLearner (#1125)

* fixing the names SimpleRNNLearner and AutoencoderLearner

* remove the warning messages

aimacode/aima-python,Chipe1/aima-python,Chipe1/aima-python,aimacode/aima-python