Add shift to functions/__init__.py
Add shift to functions/__init__.py

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