We haven't explained now what kind of patches we want or how to
push a branch for us to merge in the docs. Well, at least we
haven't explained the patch part well. We should basically give an
example tutorial session on how to submit a proper patch.

We should make an atom feed so you can subscribe to users' posts.

We already have werkzeug as a dependency and it looks like that
includes an atom feed generator:

`http://flask.pocoo.org/snippets/10/ <http://flask.pocoo.org/snippets/10/>`_

Whomever works on this should:


-  add the feed
-  link to the feed on the user profile
-  add appropriate metadata to the page so the browser indicates
   there's an available atom feed

::

    ./bin/gmg shell mediagoblin.ini

should launch a shell with:


-  mediagoblin.globals set up and pre-imported as mgoblin\_globals
-  "mgoblin\_app" instance set up, an instance of MediaGoblinApp
-  a bit of text is printed out explaining that those two variables
   are available