Tuning hyperparams automatically with Spearmint

See these articles for description:

• http://fastml.com/tuning-hyperparams-automatically-with-spearmint/
• http://fastml.com/spearmint-with-a-random-forest/
• http://fastml.com/madelon-spearmints-revenge/

wine_rf dir refers to the second one, madelon dir to the third one.