Support keyboardinterrupt in imagenet example
Support keyboardinterrupt in imagenet example

niboshi/chainer,cupy/cupy,sou81821/chainer,hidenori-t/chainer,jnishi/chainer,1986ks/chainer,chainer/chainer,kikusu/chainer,tereka114/chainer,keisuke-umezawa/chainer,umitanuki/chainer,truongdq/chainer,ytoyama/yans_chainer_hackathon,wavelets/chainer,cupy/cupy,jnishi/chainer,sinhrks/chainer,ikasumi/chainer,t-abe/chainer,kikusu/chainer,jfsantos/chainer,kiyukuta/chainer,niboshi/chainer,wkentaro/chainer,niboshi/chainer,okuta/chainer,chainer/chainer,jnishi/chainer,AlpacaDB/chainer,bayerj/chainer,delta2323/chainer,nushio3/chainer,jnishi/chainer,ktnyt/chainer,keisuke-umezawa/chainer,chainer/chainer,masia02/chainer,tkerola/chainer,keisuke-umezawa/chainer,yanweifu/chainer,hvy/chainer,nushio3/chainer,wkentaro/chainer,muupan/chainer,ysekky/chainer,okuta/chainer,benob/chainer,aonotas/chainer,ttakamura/chainer,t-abe/chainer,ttakamura/chainer,cemoody/chainer,keisuke-umezawa/chainer,ktnyt/chainer,kuwa32/chainer,ktnyt/chainer,cupy/cupy,ronekko/chainer,hvy/chainer,muupan/chainer,ktnyt/chainer,tscohen/chainer,woodshop/complex-chainer,laysakura/chainer,benob/chainer,elviswf/chainer,kashif/chainer,hvy/chainer,minhpqn/chainer,pfnet/chainer,anaruse/chainer,woodshop/chainer,sinhrks/chainer,truongdq/chainer,AlpacaDB/chainer,niboshi/chainer,okuta/chainer,wkentaro/chainer,cupy/cupy,Kaisuke5/chainer,rezoo/chainer,tigerneil/chainer,hvy/chainer,okuta/chainer,chainer/chainer,wkentaro/chainer