Added a django admin class for api.models.App.
Merge pull request #197 from opdemand/app-in-django-admin

Added a django admin class for api.models.App.
Fixed #198 -- ensure new users have is_active == True.
Merge pull request #200 from opdemand/198-user-isnt-active

Fixed #198 -- ensure new users have is_active == True.
added knife-digital_ocean to Gemfile
added digital ocean to provider choices
added a standardized way of adding new providers

this way, developers just need to provide a new
dict to the function, containing al of the
provider discovery code
added dop to the requirements list

this is a python package for communicating with
the Digital Ocean API
added snapshot/controller provisioning scripts
added digitalocean provider code
Merge branch '73-digitalocean-provider' of github.com:bacongobbler/deis into 73-digitalocean-provider