Add documentation and use default sort parameters

Author: kean

WordPressKit/BlazeServiceRemote.swift

@@ -36,12 +36,15 @@ open class BlazeServiceRemote: ServiceRemoteWordPressComREST {
 
     // MARK: - Campaigns
 
+    /// Searches the campaigns for the site with the given ID. The campaigns are returned ordered by the post date.
+    ///
+    /// - parameters:
+    ///   - siteId: The site ID.
+    ///   - page: The response page. By default, returns the first page.
     open func searchCampaigns(forSiteId siteId: Int, page: Int = 1, callback: @escaping (Result<BlazeCampaignsSearchResponse, Error>) -> Void) {
         let endpoint = "sites/\(siteId)/wordads/dsp/api/v1/search/campaigns/site/\(siteId)"
         let path = self.path(forEndpoint: endpoint, withVersion: ._2_0)
         wordPressComRestApi.GET(path, parameters: [
-            "order": "asc" as AnyObject,
-            "order_by": "post_date" as AnyObject,
             "page": "\(page)" as AnyObject,
             "site_id": "\(siteId)" as AnyObject
         ], success: { response, _ in