Merge pull request #173 from allisson/master

Fix typo in model.
Add rest framework on requirements file
create all api views
Add generic api url
create api package
include urls api on opps.urls
create Container api (get)
Add url entry container api
Merge branch 'master' of github.com:opps/opps
fix pep8, opps/containers/views.py E302 expected 2 blank lines, found 1
Including all necessary files on a single line of recursive-include.