Move markdown library.

utils/dartdoc/markdown.dart

Index: utils/dartdoc/markdown.dart
diff --git a/utils/markdown/lib.dart b/utils/dartdoc/markdown.dart
similarity index 94%
rename from utils/markdown/lib.dart
rename to utils/dartdoc/markdown.dart
index ba064b4f48866e33604dbbe3a135372e2a2b4822..abf43e6308f9f8a822f573474b8c63068304f78f 100644
--- a/utils/markdown/lib.dart
+++ b/utils/dartdoc/markdown.dart
@@ -2,9 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-/// Parses text in markdown format. Use this entrypoint if you want to parse
-/// markdown from your own Dart code. To parse markdown by running the script
-/// directly from the command line, see markdown.dart.
+/// Parses text in a markdown-like format and renders to HTML.
 #library('markdown');
 
 #source('ast.dart');