Booking form for user info.  Rake task for generating time slots.  Display time slots with collection check boxes.

Instead of comments, use desc to provide a brief rake task description:

```ruby
desc "Create a month of time slots for the given month (like rake make_time_slots[6])"
task make_time_slots: :environment do
 # etc
end
```

That way it'll show up in `rake -T`, too!