Clean up the README

Former-commit-id: 8c60b78

README.md

@@ -8,7 +8,8 @@ A Dart build script (build.dart) will be executed if found.
 
 *NOTE*: The current official builds of Dart SDK do not support Heroku, due to
 mismatched glibc versions. You need to provide your own .tar.gz of Dart SDK,
-compiled for Ubuntu 10.04 (Heroku's Cedar stack).
+compiled for Ubuntu 10.04 (Heroku's Cedar stack). Get [instructions for
+building Dart for Ubuntu 10.04][instructions].
 
 ## Getting Started
 
@@ -63,53 +64,13 @@ To git@heroku.com:dart-server-test.git
 $> curl http://myapp_name.herokuapp.com/
 ```
 
-## Configuration
-
-#### Custom Location
-
-You can specify a url to download the sdk from. The downloadable file must be in the same format as the one generated by the dart team. (gzip file containing the 'dart-sdk' directory')
-
-```bash
-$> heroku config:set DART_SDK_URL=<archive url>
-```
-
-#### Enable ENV Variables
-
-In order for the build version or archive to come through in to the build pack you also need to set an experimental flag on Heroku
-
-```bash
-$> heroku labs:enable user-env-compile
-```
-More info on that can be found in [Heroku's Devcenter: Heroku Labs: user-env-compile](https://devcenter.heroku.com/articles/labs-user-env-compile)
-
 ## Example 
 
-See `test-app` directory for the world simplest Dart web app running on Heroku: [dartvm.herokuapp.com](http://dartvm.herokuapp.com/)
+See `test-app` directory for the world simplest Dart web app running on Heroku: [http://dart-server-test.herokuapp.com/](http://dart-server-test.herokuapp.com/)
 
 ## License
 
 The MIT License - Copyright (c) 2012 Ilya Grigorik
 
 
-## Features that might prove useful in the future
-
-If the official build of Dart SDK starts to support Heroku, these options
-may be useful.
-
-#### Build Version
-
-You can specify the version of the dart-sdk that should be used by
-
-```bash
-$> heroku config:set BUILD=<version number>
-```
-
-A list of versions can be found [here](http://commondatastorage.googleapis.com/dart-editor-archive-integration/latest/changelog.html), by default `latest` is chosen. 
-
-#### Archive Location
-
-The build archive location can be modified to choose between [continuous](http://commondatastorage.googleapis.com/dart-editor-archive-continuous) or [integration](http://commondatastorage.googleapis.com/dart-editor-archive-integration), by default integration archive is chosen. 
-
-```bash
-$> heroku config:set ARCHIVE=<archive url>
-```
+[instructions]: https://code.google.com/p/dart/wiki/BuildDartSDKOnUbuntu10_04