general: stack

* coveralls
* travis
* sphinx
* tox
* nose

Signed-off-by: Mateusz Susik <mateusz.susik@cern.ch>
> 'author': 'CERN',

The author should be `Invenio collaboration`, not CERN.  (Because Invenio is "wider" than CERN, and other people/institutions may contributed.)

> Note sure we should use this email. 

We use it as the contact address for all `inveniosoftware` projects.