Define $current_date override only if ?t= query parameter given.
Document in README.
Ensure proper roll via IceCube::next_occurrence by passing a time range to Schedule.new. Arbitrarily using 9:00AM to 5:00PM on day of service.
Merge branch 'master' of https://github.com/open-austin/austin-recycles

Noticed some changes to the respository that I had not pulled; specifically collection-route.rb.
Fixes #17. Uses Time.now rather than Date.today when calculating current time. This solves the issue where the service date rolls prematurely on the date of service, but it also breaks the web service's ability to use a URL-specified time for testing purposes.