lib/foursquare2/campaigns.rb
def end_campaign(campaign_id, options={})
      response = connection.post do |req|
        req.url "campaigns/#{campaign_id}/end", options
      end
        return_error_or_body(response, response.body.code)
    end
def end_campaign(campaign_id, options={})
      response = connection.post do |req|
        req.url "campaigns/#{campaign_id}/end", options
      end
        return_error_or_body(response, response.body.code)
    end
End a campaign
 Details on param can be found at https://developer.foursquare.com/docs/campaigns/end

 @campaign_id String :campaignId - The ID of the campaign to end. Must be specified. Pass in as a string and not as a hash.