added IObservableSearchClient

Octokit.Reactive/Clients/IObservableSearchClient.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.Reactive;
+
+namespace Octokit.Reactive
+{
+
+    /// <summary>
+    /// GitHub Search Api Client
+    /// </summary>
+    public interface IObservableSearchClient
+    {
+        /// <summary>
+        /// search repos
+        /// http://developer.github.com/v3/search/#search-repositories
+        /// </summary>
+        /// <param name="search"></param>
+        /// <returns>List of repos</returns>
+        IObservable<Repository> SearchRepo(SearchRepositoriesRequest search);
+
+        /// <summary>
+        /// search users
+        /// http://developer.github.com/v3/search/#search-users
+        /// </summary>
+        /// <param name="search"></param>
+        /// <returns>List of users</returns>
+        IObservable<User> SearchUsers(SearchUsersRequest search);
+
+        /// <summary>
+        /// search issues
+        /// http://developer.github.com/v3/search/#search-issues
+        /// </summary>
+        /// <param name="search"></param>
+        /// <returns>List of issues</returns>
+        IObservable<Issue> SearchIssues(SearchIssuesRequest search);
+
+        /// <summary>
+        /// search code
+        /// http://developer.github.com/v3/search/#search-code
+        /// </summary>
+        /// <param name="search"></param>
+        /// <returns>List of files</returns>
+        IObservable<SearchCode> SearchCode(SearchCodeRequest search);
+    }
+}

Octokit.Reactive/Octokit.Reactive.csproj

@@ -77,6 +77,7 @@
     <Compile Include="Clients\IObservableGistCommentsClient.cs" />
     <Compile Include="Clients\IObservableGistsClient.cs" />
     <Compile Include="Clients\IObservableReferencesClient.cs" />
+    <Compile Include="Clients\IObservableSearchClient.cs" />
     <Compile Include="Clients\ObservableGistCommentsClient.cs" />
     <Compile Include="Clients\ObservableGistsClient.cs" />
     <Compile Include="Clients\ObservableReferencesClient.cs" />

Octokit/Clients/SearchClient.cs

@@ -4,6 +4,9 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 namespace Octokit
 {
+    /// <summary>
+    /// GitHub Search Api Client
+    /// </summary>
     public class SearchClient : ApiClient, ISearchClient
     {
         /// <summary>