Ramhappens

v2
If you use real scopes with params, you can get rid of the `.present?` stuff from here. This is what I mean by the 80 chars being too much work:

```
Event.order('created_at DESC')
         .with_source(params[:event_source] || :theatre_in_chicago)
         .after_date(params[:start_date])
etc etc

class Event
  scope :after_date, ->(date) { where("date >= ?", date) if date.present? }
end