Link to dartlang.org in pub's command-line help messages.

sdk/lib/_internal/pub/test/pub_test.dart

Index: sdk/lib/_internal/pub/test/pub_test.dart
diff --git a/sdk/lib/_internal/pub/test/pub_test.dart b/sdk/lib/_internal/pub/test/pub_test.dart
index 585b3f4eca29f03c0f92ac9bb72199227911a1ea..7beabaef6c1afa6ba2abf3011007e80928996903 100644
--- a/sdk/lib/_internal/pub/test/pub_test.dart
+++ b/sdk/lib/_internal/pub/test/pub_test.dart
@@ -41,6 +41,7 @@ final USAGE_STRING = """
       version    Print pub version.
 
     Use "pub help [command]" for more information about a command.
+    See http://dartlang.org/tools/pub for detailed documentation.
     """;
 
 final VERSION_STRING = '''
@@ -71,6 +72,8 @@ main() {
           -h, --help            Print usage information for this command.
               --[no-]offline    Use cached packages instead of accessing the network.
           -n, --dry-run         Report what dependencies would change but don't change any.
+
+          See http://dartlang.org/tools/pub/cmd/pub-get.html for detailed documentation.
     ''');
   });
 
@@ -83,6 +86,8 @@ main() {
           -h, --help            Print usage information for this command.
               --[no-]offline    Use cached packages instead of accessing the network.
           -n, --dry-run         Report what dependencies would change but don't change any.
+
+          See http://dartlang.org/tools/pub/cmd/pub-get.html for detailed documentation.
     ''');
   });
 
@@ -98,6 +103,8 @@ main() {
           Available subcommands:
             add      Install a package.
             repair   Reinstall cached packages.
+
+          See http://dartlang.org/tools/pub/cmd/pub-cache.html for detailed documentation.
      ''');
   });
 
@@ -138,6 +145,8 @@ main() {
         Available subcommands:
           add      Install a package.
           repair   Reinstall cached packages.
+
+        See http://dartlang.org/tools/pub/cmd/pub-cache.html for detailed documentation.
         ''',
         exitCode: exit_codes.USAGE);
   });
@@ -184,6 +193,8 @@ main() {
         Available subcommands:
           add      Install a package.
           repair   Reinstall cached packages.
+
+        See http://dartlang.org/tools/pub/cmd/pub-cache.html for detailed documentation.
         ''',
         exitCode: exit_codes.USAGE);
   });
@@ -202,6 +213,8 @@ main() {
             -h, --help            Print usage information for this command.
                 --[no-]offline    Use cached packages instead of accessing the network.
             -n, --dry-run         Report what dependencies would change but don't change any.
+
+            See http://dartlang.org/tools/pub/cmd/pub-get.html for detailed documentation.
             ''');
     });
 
@@ -216,6 +229,8 @@ main() {
             -f, --force      Publish without confirmation if there are no errors.
                 --server     The package server to which to upload this package.
                              (defaults to "https://pub.dartlang.org")
+
+            See http://dartlang.org/tools/pub/cmd/pub-lish.html for detailed documentation.
             ''');
     });
 
@@ -243,6 +258,8 @@ main() {
                                      (defaults to on)
 
                 --[no-]force-poll    Force the use of a polling filesystem watcher.
+
+            See http://dartlang.org/tools/pub/cmd/pub-serve.html for detailed documentation.
             ''');
     });
 
@@ -288,6 +305,8 @@ main() {
             Available subcommands:
               add      Install a package.
               repair   Reinstall cached packages.
+
+            See http://dartlang.org/tools/pub/cmd/pub-cache.html for detailed documentation.
             ''',
             exitCode: exit_codes.USAGE);
     });