Adding some xmlcomments

Author: StanleyGoldman

src/GitHub.Exports.Reactive/ViewModels/GitHubPane/IPullRequestCheckViewModel.cs

@@ -5,14 +5,45 @@
 
 namespace GitHub.ViewModels.GitHubPane
 {
+    /// <summary>
+    /// Represents a view model for displaying details of a pull request Status or Check.
+    /// </summary>
     public interface IPullRequestCheckViewModel: IViewModel
     {
+        /// <summary>
+        /// The title of the Status/Check
+        /// </summary>
         string Title { get; }
+
+        /// <summary>
+        /// The description of the Status/Check
+        /// </summary>
         string Description { get; }
+
+        /// <summary>
+        /// The status of the Status/Check
+        /// </summary>
         PullRequestCheckStatus Status { get; }
+
+        /// <summary>
+        /// The url where more information about the Status/Check can be found
+        /// </summary>
         Uri DetailsUrl { get; }
+
+        /// <summary>
+        /// The AvatarUrl of the Status/Check application
+        /// </summary>
         string AvatarUrl { get; }
+
+        /// <summary>
+        /// The BitmapImage of the AvatarUrl
+        /// </summary>
         BitmapImage Avatar { get; }
+
+        /// <summary>
+        /// A command that opens the DetailsUrl in a browser
+        /// </summary>
+
         ReactiveCommand<object> OpenDetailsUrl { get; }
     }
 

src/GitHub.Exports.Reactive/ViewModels/GitHubPane/IPullRequestDetailViewModel.cs

@@ -175,6 +175,11 @@ public interface IPullRequestDetailViewModel : IPanePageViewModel, IOpenInBrowse
         /// </summary>
         ReactiveCommand<object> ShowReview { get; }
 
+
+        /// <summary>
+        /// Gets the latest pull request Checks & Statuses
+        /// </summary>
+
         IReadOnlyList<IPullRequestCheckViewModel> Checks { get; }
 
         /// <summary>