prepping repo collaborators client

Octokit/Clients/RepositoriesClient.cs

@@ -21,6 +21,7 @@ namespace Octokit
         public RepositoriesClient(IApiConnection apiConnection) : base(apiConnection)
         {
             CommitStatus = new CommitStatusClient(apiConnection);
+            RepoCollaboratorsClient = new RepoCollaboratorsClient(apiConnection);
         }
 
         /// <summary>
@@ -194,5 +195,13 @@ namespace Octokit
         /// that announced this feature.
         /// </remarks>
         public ICommitStatusClient CommitStatus { get; private set; }
+
+        /// <summary>
+        /// A client for GitHub's Repo Collaborators.
+        /// </summary>
+        /// <remarks>
+        /// See the <a href="http://developer.github.com/v3/repos/collaborators/">Collaborators API documentation</a> for more details
+        /// </remarks>
+        public IRepoCollaboratorsClient RepoCollaboratorsClient { get; private set; }
     }
 }