Add authentication for administration.
Merge branch 'master' into add-authentication

* master:
  Ignore .env.
Merge branch 'master' into add-authentication

* master: (23 commits)
  Update .env.example.
  Remove HomeController.
  Add EventsController, views, routes, and tests.
  Added EventbriteEventService#open_registration
  Scheduling an event now copies the event on Eventbrite and modifies it.
  Added Event#previous_event to grab last event.
  Added EventbriteHelper.formatted_date.
  Refactored FakeEventbriteClient and added #event_get.
  Move pg gem out of production group and vendor it.
  Add pg gem to production group.
  Update README with correct instructions.
  Update README with correct instructions.
  Rename README.rdoc to README.md.
  Rename README.rdoc to README.md.
  Ensure coffeescript, sass, and compass all work.
  Ensure coffeescript, sass, and compass all work.
  Add .env.example.
  Add .env.example.
  Stand proud.
  Start implementing EventService and EventbriteEventService.
  ...

Conflicts:
	.env.example
	Gemfile
	Gemfile.lock
	config/routes.rb
	db/schema.rb
Removed controller tests.

We may add integration tests at some point. Not concerned about
controller tests for the moment.
Merge pull request #4 from CoderDojoSF/add-authentication

Add authentication