improve comment of inputs_all_ready
improve comment of inputs_all_ready

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