Adding docs for useInternal
Adding docs for useInternal

songanbui/pkgcloud,andrewsomething/pkgcloud,Hopebaytech/pkgcloud,temka1234/pkgcloud,DonSchenck/pkgcloud,mdsummers/pkgcloud,pkgcloud/pkgcloud,hacor/pkgcloud,Phanatic/pkgcloud,apla/pkgcloud,bunglestink/pkgcloud,Phanatic/pkgcloud,mcanthony/pkgcloud,dionjwa/pkgcloud