PullRequest model now contains all of necessary fields

- Initial integration test for pull requests (can't seem to do much
without the tree api)
- Added Observable unit tests for the rest of the pull request client

Octokit/Models/Response/PullRequest.cs

@@ -9,11 +9,6 @@ namespace Octokit
         /// </summary>
         public Uri Url { get; set; }
 
-        /// <summary>
-        /// The pull request number.
-        /// </summary>
-        public int Number { get; set; }
-
         /// <summary>
         /// The URL for the pull request page.
         /// </summary>
@@ -28,5 +23,115 @@ namespace Octokit
         /// The URL for the pull request's patch (.patch) file.
         /// </summary>
         public Uri PatchUrl { get; set; }
+
+        /// <summary>
+        /// The URL for the specific pull request issue.
+        /// </summary>
+        public Uri IssueUrl { get; set; }
+
+        /// <summary>
+        /// The URL for the pull request statuses.
+        /// </summary>
+        public Uri StatusesUrl { get; set; }
+
+        /// <summary>
+        /// The pull request number.
+        /// </summary>
+        public int Number { get; set; }
+
+        /// <summary>
+        /// Whether the pull request is open or closed. The default is <see cref="ItemState.Open"/>.
+        /// </summary>
+        public ItemState State { get; set; }
+
+        /// <summary>
+        /// Title of the pull request.
+        /// </summary>
+        public string Title { get; set; }
+
+        /// <summary>
+        /// The body (content) contained within the pull request.
+        /// </summary>
+        public string Body { get; set; }
+
+        /// <summary>
+        /// When the pull request was created.
+        /// </summary>
+        public DateTimeOffset CreatedAt { get; set; }
+
+        /// <summary>
+        /// When the pull request was last updated.
+        /// </summary>
+        public DateTimeOffset UpdatedAt { get; set; }
+
+        /// <summary>
+        /// When the pull request was closed.
+        /// </summary>
+        public DateTimeOffset ClosedAt { get; set; }
+
+        /// <summary>
+        /// When the pull request was merged.
+        /// </summary>
+        public DateTimeOffset MergedAt { get; set; }
+
+        /// <summary>
+        /// The HEAD reference for the pull request.
+        /// </summary>
+        public GitReference Head { get; set; }
+
+        /// <summary>
+        /// The BASE reference for the pull request.
+        /// </summary>
+        public GitReference Base { get; set; }
+        
+        /// <summary>
+        /// The user who created the pull request.
+        /// </summary>
+        public User User { get; set; }
+
+        /// <summary>
+        /// The SHA of the merge commit.
+        /// </summary>
+        public string MergeCommitSha { get; set; }
+
+        /// <summary>
+        /// Whether or not the pull request has been merged.
+        /// </summary>
+        public bool Merged { get; set; }
+
+        /// <summary>
+        /// Whether or not the pull request can be merged.
+        /// </summary>
+        public bool Mergable { get; set; }
+
+        /// <summary>
+        /// The user who merged the pull request.
+        /// </summary>
+        public User MergedBy { get; set; }
+
+        /// <summary>
+        /// Total number of comments contained in the pull request.
+        /// </summary>
+        public int Comments { get; set; }
+
+        /// <summary>
+        /// Total number of commits contained in the pull request.
+        /// </summary>
+        public int Commits { get; set; }
+
+        /// <summary>
+        /// Total number of additions contained in the pull request.
+        /// </summary>
+        public int Additions { get; set; }
+
+        /// <summary>
+        /// Total number of deletions contained in the pull request.
+        /// </summary>
+        public int Deletions { get; set; }
+
+        /// <summary>
+        /// Total number of files changed in the pull request.
+        /// </summary>
+        public int ChangedFiles { get; set; }
     }
 }