Add npm package of the documentation

[zdne]

@kylef @w-vi why are we doing this?

[pksunkara]

I agree with Z. Why are we doing this?

[kylef]

Yes, this is an approach I don't want to go down. I believe with some discussion we can proceed by using a git submodule now so I'm going to close this.

[w-vi]

It really sucks, so maybe next we will be able to persuade the rest that submodules are the best option

[zdne]

@w-vi @kylef @pksunkara I did not say this is good or bad. Rather, I was missing any explanation of this PR.