creating reservations controller
renaming Room#index to Room#show
removing unnecessary file
moving gem shoulda-matchers to development group
adding gem business time to project
creating relation between user and reservation
creating actions ReservationController#create and ReservationController#destroy
creating validations for Reservation (start_at and end_at uniqueness)
creating structure to user makes reservations
creating Reservation scope that returns only reservations at the current week
moving all parse of Reservation logic from Room controller to models