<feature request> Use apropos to get candidate. for :Unite ref/man in linux.

[blindFS]

I think the command apropos is quick and powerful. So it will nice to use it to get candidates.
I once wrote a small addon for unite.vim named unite-apropos. It looks like this:

So I think ref/man might do the same.

[thinca]

I didn't know about apropos. I'll try it in some day. Thanks.

[crazymaster]

apropos is equivalent to man -k.