Polish comments for multi-add
Polish comments for multi-add

wkentaro/chainer,okuta/chainer,tkerola/chainer,keisuke-umezawa/chainer,chainer/chainer,okuta/chainer,hvy/chainer,niboshi/chainer,jnishi/chainer,rezoo/chainer,chainer/chainer,ktnyt/chainer,ktnyt/chainer,ronekko/chainer,jnishi/chainer,ktnyt/chainer,niboshi/chainer,jnishi/chainer,chainer/chainer,jnishi/chainer,wkentaro/chainer,keisuke-umezawa/chainer,hvy/chainer,pfnet/chainer,wkentaro/chainer,niboshi/chainer,ktnyt/chainer,hvy/chainer,okuta/chainer,niboshi/chainer,keisuke-umezawa/chainer,wkentaro/chainer,anaruse/chainer,hvy/chainer,okuta/chainer,keisuke-umezawa/chainer,chainer/chainer