[doc] Add iOS AbstractModel image

This is the model as the iOS application uses it, as a reference
License file
Model for accounts
First simple model implementation
Merge pull request #1 from stoewer/master

First model implementation

LGTM!
Remove initial attempt Couchdb support (for now)
Abstract: has now an attribute 'approved' and 'published'
AbstractService: first outline for the abstract service class.
Models: move model package to top level
Merge pull request #7 from gicmo/remove_couch

OK
AbstractService: add conference id as parameter to create().
Abstract: has now an attribute 'approved' and 'published'
Merge upstream/master into local master
Merge upstream/master into local master
Merge pull request #8 from stoewer/master

Okay.
Merge upstream/master into local master
Conference: add companion object
added draft of the URL patterns
Figure: add companion object
Merge branch 'master' into andrey