using chinese whispers for face cluster
face embedding：facenet： https://github.com/davidsandberg/facenet
csdn blog： http://blog.csdn.net/liyuan123zhouhui/article/details/70312716
batch_cluster.py is used for batch clustering,which means you have many directory to cluster.
clustering.py is just clustering one directory,you input a directory that has many face,and you will get a lot of directory that each one is a cluster.