about nninit package

[xichangzun]

I ran into a bug said 'could not found nninit package', I am not sure if this package is what I need.
It seems like the package is not used at all,shoud we just remove it?
And......Since the nninit package is not defaultly installed, I think the README file should mention it.

[liuzhuang13]

@xichangzun Hi, thanks for pointing out. This package is indeed not needed, so we removed it in our code. Now it should be ok.