[O] How to install recent documentation of org 8.2?

[Martin Beck]

I tried to get a recent documentation in my org-mode:

I'm using Aquamacs 2.5 on MacOS X, which seems to have org-mode 6.33
"onboard".

I tried to load the recent documentation with a link to the "doc" directory
in my org-mode 8.2 (expanded contents from git repository) in my .emacs.
 
(add-to-list 'Info-additional-directory-list
             (expand-file-name "~/mypath/org-mode/org_current/doc"))

But this does have no effect. With C-h i, I get displayed a an outdated
org-manual.

Is the "doc" directory the right one or do I have to download the
documentation separately?
I had downloaded the zipped version from http://orgmode.org/org-8.2.1.zip .

Kind regards

Martin