Add some notes.

Author: ScoutHarris

WordPress/Classes/ViewRelated/Feature Introduction/Blogging Prompts/BloggingPromptsFeatureIntroduction.swift

@@ -1,6 +1,6 @@
 import UIKit
 
-// TODO: add description
+/// This displays a Feature Introduction specifically for Blogging Prompts.
 
 class BloggingPromptsFeatureIntroduction: FeatureIntroductionViewController {
 

WordPress/Classes/ViewRelated/Feature Introduction/FeatureIntroductionViewController.swift

@@ -5,7 +5,11 @@ import UIKit
     @objc optional func secondaryActionSelected()
 }
 
-// TODO: add description
+/// This is used to display a modal with information about a new feature.
+/// The feature description is displayed via the provided featureDescriptionView,
+/// which is presented in the scrollable area of the view.
+/// A primary action button is always displayed.
+/// A secondary action button is displayed if a secondaryButtonTitle is provided.
 
 class FeatureIntroductionViewController: CollapsableHeaderViewController {