add failing test for new buffer from buffer.toJSON() for #37
add failing test for new buffer from buffer.toJSON() for #37

beni55/buffer,feross/buffer,feross/buffer,btd/buffer,btd/buffer,kawanet/buffer,nolanlawson/buffer,SAGV/buffer,LinusU/buffer,LinusU/buffer,loon3/buffer,LiuDeng/buffer,jessetane/buffer,kawanet/buffer,feross/buffer,loon3/buffer,beni55/buffer,SAGV/buffer,nolanlawson/buffer,LiuDeng/buffer