refactored bookings tests, delete test passing
install timecop
custom validation method for bookings and HashWithIndifferentAccess monkey patch
first pass at using scope
migration to add end_time to bookings model
scope for overlapping bookings working
Merge branch 'master' of github.com:margOnline/bookIt

Conflicts:
	app/models/booking.rb
Merge branch 'scope_booked'