Make <summary> xmldoc elements a single sentence

Author: jcansdale

src/GitHub.Exports/Commands/IOpenFromClipboardCommand.cs

@@ -1,14 +1,15 @@
 namespace GitHub.Commands
 {
     /// <summary>
+    /// Open a file in the current repository based on a URL in the clipboard.
+    /// </summary>
+    /// <remarks>
     /// This command appears as `Code context > GitHub > Open from clipboard`.
     /// 
     /// Open a working directory file at the same location as a GitHub URL in the clipboard. If the URL links to
     /// a line or range of lines, these lines will be selected. If the working directory file is different to the
     /// target file, the target file will be opened in the `Blame (Annotate)` view. If the URL is from a different
     /// fork, it will still open the target file assuming that the target commit/branch exists.
-    /// </summary>
-    /// <remarks>
     /// Currently only GitHub `blob` URLs are supported. In a future version we can add support for `pull`, `issue`,
     /// `tree`, `commits`, `blame` and any other URL types that might make sense.
     /// </remarks>

src/GitHub.Exports/Commands/IOpenFromUrlCommand.cs

@@ -1,13 +1,16 @@
 namespace GitHub.Commands
 {
     /// <summary>
+    /// Open a repository from a URL in the clipboard.
+    /// </summary>
+    /// <remarks>
     /// This appears as the named command `GitHub.OpenFromUrl` and must be bound to a keyboard shortcut or executed
     /// via the `Command Window`. In future it will appear on `File > Open > Open from GitHub`.
     /// 
     /// When executed it will offer to clone, open and navigate to the file pointed to by a URL in the clipboard.
     /// This spike uses Yes/No/Cancel dialogs, but the final version will use a UI to control what action is performed
     /// and allow the user to override the default repository location.
-    /// </summary>
+    /// </remarks>
     public interface IOpenFromUrlCommand : IVsCommand<string>
     {
     }

src/GitHub.Exports/Services/GitHubContext.cs

@@ -4,10 +4,12 @@
 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.
+    /// Information used to map betwen a GitHub URL and some other context.
     /// </summary>
+    /// <remarks>
+    /// 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 in a blame view and GitHub URL.
+    /// </remarks>
     public class GitHubContext
     {
         /// <summary>

src/GitHub.Exports/Services/IGitHubContextService.cs

@@ -3,6 +3,9 @@
 
 namespace GitHub.Services
 {
+    /// <summary>
+    /// Methods for constructing a <see cref="GitHubContext"/> and navigating based on a <see cref="GitHubContext"/>.
+    /// </summary>
     public interface IGitHubContextService
     {
         /// <summary>