Add LogOut Use Case
adds migrations for the orm, creates active record models
Modifies the Log Out Use Case to use session_id versus user_id
Merge branch 'development' into ORM-db

Conflicts:
	spec/db/shared_spec.rb
Merge branch 'development' into logout_use_case
updates in_memory to include get user by session id
create listing use case and spec are working, returning session id and new istance of listing
adding files for previous commit
adds db directory to the root directory containing database configuration, schema, and migration files.
Merge pull request #44 from felguerez/sessions

Create Listing Use/Case, add get user by session id to db
Merge pull request #45 from felguerez/ORM-db

adds db file to root directory containing database configuration, schema, and migration files
Removed user object from LogOut use case
Merge branch 'logout_use_case' into development

Conflicts:
	lib/air_cycle.rb
starts delete listing usecase and spec
Merge branch 'development' of https://github.com/felguerez/aircycle into delete_listing

Conflicts:
	lib/air_cycle.rb
adds create and get method to orm db class
adds list_users method to orm database
adds specs and methods to in_memory to list all listings and delete listings
finished delete listing use case. success!
Merge pull request #49 from felguerez/delete_listing

Adds 'Delete Listing Use Case'

Great work, Brandon! ^_^
Add AirCycle::CreateReservation Use Case, error validation in CreateReservationSpec.