factored out model building into its own module
added -d option to test_ensemble to load user svm files
tweak
removed StandardScaler after data load; tweaked imports
renamed test_ensemble to ensemble_demo
changed db_name to db_file
added optional train/test split depending on test_size param
changed db_name to db_file, and train_file to data_file
added logic to drop train_test_split if test_size == 0.0
renamed ensemble_demo.py -> ensemble_train.py
added nystroem-lr pipelines
tweaked docstring; added kernp to model options
docstring tweak
initial commit
updated to reflect new structure