delete old prepare_examples(), delete map_attributes(), update readme.rmd

Author: i1es

NAMESPACE

@@ -8,7 +8,6 @@ S3method(evaluate,ppred_model)
 S3method(fit,ppred_model)
 S3method(plot,ppred_predictions)
 S3method(predict,ppred_model)
-S3method(prepare_examples,log)
 S3method(prepare_examples_dt,activitylog)
 S3method(prepare_examples_dt,eventlog)
 S3method(split_train_test,ppred_examples_df)
@@ -26,11 +25,9 @@ export(fit)
 export(get_task)
 export(get_vocabulary)
 export(hot_encode_feats)
-export(map_attributes)
 export(max_case_length)
 export(num_outputs)
 export(predict)
-export(prepare_examples)
 export(prepare_examples_dt)
 export(split_train_test)
 export(stack_layers)