Improve documents of Reporter
Improve documents of Reporter

wkentaro/chainer,anaruse/chainer,niboshi/chainer,cupy/cupy,hvy/chainer,ronekko/chainer,kikusu/chainer,keisuke-umezawa/chainer,kikusu/chainer,okuta/chainer,cupy/cupy,ktnyt/chainer,okuta/chainer,ktnyt/chainer,chainer/chainer,keisuke-umezawa/chainer,niboshi/chainer,ktnyt/chainer,keisuke-umezawa/chainer,rezoo/chainer,jnishi/chainer,niboshi/chainer,chainer/chainer,keisuke-umezawa/chainer,jnishi/chainer,hvy/chainer,jnishi/chainer,delta2323/chainer,cupy/cupy,kiyukuta/chainer,wkentaro/chainer,okuta/chainer,hvy/chainer,hvy/chainer,chainer/chainer,jnishi/chainer,pfnet/chainer,chainer/chainer,niboshi/chainer,kashif/chainer,ktnyt/chainer,cupy/cupy,okuta/chainer,aonotas/chainer,tkerola/chainer,wkentaro/chainer,ysekky/chainer,wkentaro/chainer