Cross Reference: /external/opencv3/doc/py_tutorials/py_ml/py_knn

`Name`	`Date`	`Size`
Up to higher level directory
`images/`	21-Oct-2016
`py_knn_index.markdown`	21-Oct-2016	`251`
`py_knn_opencv/`	21-Oct-2016
`py_knn_understanding/`	21-Oct-2016