Add docstring for the path option.
Add docstring for the path option.
keisuke-umezawa/chainer,jnishi/chainer,wkentaro/chainer,keisuke-umezawa/chainer,okuta/chainer,okuta/chainer,chainer/chainer,jnishi/chainer,ysekky/chainer,tkerola/chainer,hvy/chainer,ktnyt/chainer,wkentaro/chainer,wkentaro/chainer,niboshi/chainer,wkentaro/chainer,niboshi/chainer,keisuke-umezawa/chainer,aonotas/chainer,ktnyt/chainer,niboshi/chainer,ktnyt/chainer,keisuke-umezawa/chainer,okuta/chainer,okuta/chainer,hvy/chainer,pfnet/chainer,chainer/chainer,delta2323/chainer,ronekko/chainer,ktnyt/chainer,jnishi/chainer,hvy/chainer,chainer/chainer,jnishi/chainer,kashif/chainer,rezoo/chainer,kiyukuta/chainer,anaruse/chainer,chainer/chainer,niboshi/chainer,hvy/chainer