Add xmldocs for GitHubContext

Author: jcansdale

src/GitHub.Exports/Services/GitHubContext.cs

@@ -3,22 +3,60 @@
 
 namespace GitHub.Services
 {
+    /// <summary>
+    /// Information used to map betwen a GitHub URL and some other context. This might be used to navigate
+    /// between a GitHub URL and the location a repository file. Alternatively it might be used to map between
+    /// the line a in a blame view and GitHub URL.
+    /// </summary>
     public class GitHubContext
     {
+        /// <summary>
+        /// The owner of a repository.
+        /// </summary>
         public string Owner { get; set; }
+        /// <summary>
+        /// The name of a repository.
+        /// </summary>
         public string RepositoryName { get; set; }
+        /// <summary>
+        /// The host of a repository ("github.com" or a GitHub Enterprise host).
+        /// </summary>
         public string Host { get; set; }
+        /// <summary>
+        /// The name of a branch stored on GitHub (not the local branch name).
+        /// </summary>
         public string BranchName { get; set; }
         /// <summary>
         /// Like a tree-ish but with ':' changed to '/' (e.g. "master/src" not "master:src").
         /// </summary>
         public string TreeishPath { get; set; }
+        /// <summary>
+        /// The name of a file on GitHub.
+        /// </summary>
         public string BlobName { get; set; }
+        /// <summary>
+        /// A PR number if this context represents a PR.
+        /// </summary>
         public int? PullRequest { get; set; }
+        /// <summary>
+        /// An issue number if this context represents an issue.
+        /// </summary>
         public int? Issue { get; set; }
+        /// <summary>
+        /// The line number in a file.
+        /// </summary>
         public int? Line { get; set; }
+        /// <summary>
+        /// The end line number if this context represents a range.
+        /// </summary>
         public int? LineEnd { get; set; }
+        /// <summary>
+        /// The source Url of the context (when context originated from a URL).
+        /// </summary>
         public UriString Url { get; set; }
+        /// <summary>
+        /// The type of context if known (blob, blame etc).
+        /// </summary>
         public LinkType LinkType { get; set; }
     }
-}
+}