* minor typo * typo * Update discoverYourData.md
* fix issue 2670 * add python<3.6 compatibility * fix Index * fix Index/MultiIndex * fix lint * fix W0622 really nonsense * fix lambda * Trigger Travis * add test for MultiIndex * remove tailing whitespace
* fix DeprecationWarning on sklearn.cross_validation * fix syntax * fix kfold n_split issue * fix mistype * fix n_splits multiple value issue * split should pass a iterable * use np.arange instead of xrange, py3 compatibility