grid search folds are now configurable
squashed a bug in experiments.py
Merge branch 'develop' into feature/configurable_grid_folds
style corrected files
updated test_skll.py
changed brackets to braces for with_mean/with_std lines
did a autopep8 on learner.py
Merge branch 'develop' into feature/configurable_grid_folds
Merge branch 'develop' into feature/configurable_grid_folds