add installation instructions to pkg packages
BUG=
Review URL: https://codereview.chromium.org//14188048
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@21770 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/lib/oauth2.dart b/lib/oauth2.dart
index 7fdb205..592589d 100644
--- a/lib/oauth2.dart
+++ b/lib/oauth2.dart
@@ -6,6 +6,19 @@
/// behalf of a user, and making authorized HTTP requests with the user's OAuth2
/// credentials.
///
+/// ## Installing ##
+///
+/// Use [pub][] to install this package. Add the following to your
+/// `pubspec.yaml` file.
+///
+/// dependencies:
+/// oauth2: any
+///
+/// Then run `pub install`.
+///
+/// For more information, see the
+/// [oauth2 package on pub.dartlang.org][pkg].
+///
/// OAuth2 allows a client (the program using this library) to access and
/// manipulate a resource that's owned by a resource owner (the end user) and
/// lives on a remote server. The client directs the resource owner to an
@@ -100,6 +113,9 @@
/// }).then((file) => file.close()).then((_) => result);
/// });
/// }).then(print);
+///
+/// [pub]: http://pub.dartlang.org
+/// [pkg]: http://pub.dartlang.org/packages/oauth2
library oauth2;
export 'src/authorization_code_grant.dart';
