Link to stable-errors site from pub-build messages on the command line.

pkg/polymer/lib/src/build/linter.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // 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.
 
 /// Logic to validate that developers are correctly using Polymer constructs.
 /// This is mainly used to produce warnings for feedback in the editor.
 library polymer.src.build.linter;
 
 import 'dart:async';
 import 'dart:convert';
@@ skipping 23 matching lines @@
 
   Future apply(Transform transform) {
     var seen = new Set<AssetId>();
     var primary = transform.primaryInput;
     var id = primary.id;
     transform.addOutput(primary); // this phase is analysis only
     seen.add(id);
     bool isEntryPoint = options.isHtmlEntryPoint(id);
 
     var logger = new BuildLogger(transform,
-        convertErrorsToWarnings: !options.releaseMode);
+        convertErrorsToWarnings: !options.releaseMode,
+        detailsUri: 'http://goo.gl/5HPeuP');
 
     return readPrimaryAsHtml(transform, logger).then((document) {
       return _collectElements(document, id, transform, logger, seen)
           .then((elements) {
         new _LinterVisitor(id, logger, elements, isEntryPoint).run(document);
 
         // Write out the logs collected by our [BuildLogger].
         if (options.injectBuildLogsInOutput && logger is BuildLogger) {
           return (logger as BuildLogger).writeOutput();
         }
@@ skipping 380 matching lines @@
   } else if (segments.length > 2) {
     // web/a/foo.html => ../packages/
     upDirCount = segments.length - 2;
   }
   var reachOutPrefix = '../' * upDirCount;
   return USE_POLYMER_HTML.create({'reachOutPrefix': reachOutPrefix});
 }
 
 const List<String> INTERNALLY_DEFINED_ELEMENTS = 
     const ['auto-binding-dart', 'polymer-element'];