modified XML docs

Octokit.Reactive/Clients/IObservableIssueReactionsClient.cs

@@ -2,6 +2,12 @@
 
 namespace Octokit.Reactive
 {
+    /// <summary>
+    /// A client for GitHub's Reactions API.
+    /// </summary>
+    /// <remarks>
+    /// See the <a href="https://developer.github.com/v3/reactions/">Reactions API documentation</a> for more information.
+    /// </remarks>
     public interface IObservableIssueReactionsClient
     {
         /// <summary>
@@ -12,7 +18,7 @@ namespace Octokit.Reactive
         /// <param name="name">The name of the repository</param>
         /// <param name="number">The issue id</param>
         /// <param name="reaction">The reaction to create </param>
-        /// <returns></returns>
+        /// <returns>An <see cref="IObservable{T}"/> representing created <see cref="Reaction"/> for a specified issue.</returns>
         IObservable<Reaction> Create(string owner, string name, int number, NewReaction reaction);
 
         /// <summary>
@@ -22,7 +28,7 @@ namespace Octokit.Reactive
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
         /// <param name="number">The issue id</param>        
-        /// <returns></returns>
+        /// <returns>An <see cref="IObservable{T}"/> representing <see cref="Reaction"/>s for a specified issue.</returns>
         IObservable<Reaction> GetAll(string owner, string name, int number);
     }
 }