Removed Polymer from Observatory deps

packages/polymer/README.md

-Polymer.dart
-============
-
-Polymer.dart is a set of comprehensive UI and utility components
-for building web applications.
-With Polymer.dart's custom elements, templating, data binding,
-and other features,
-you can quickly build structured, encapsulated, client-side web apps.
-
-Polymer.dart is a Dart port of
-[Polymer][polymer] created and maintained by the Dart team.
-The Dart team is collaborating with the Polymer team to ensure that polymer.dart
-elements and polyfills are fully compatible with Polymer.
-
-Polymer.dart replaces Web UI, which has been deprecated.
-
-
-Learn More
-----------
-
-* The [Polymer.dart][home_page] homepage
-contains a list of features, project status,
-installation instructions, tips for upgrading from Web UI,
-and links to other documentation.
-
-* See our [TodoMVC][] example by opening up the Dart Editor's Welcome Page and
-selecting "TodoMVC".
-
-* For more information about Dart, see <http://www.dartlang.org/>.
-
-* When you use this package,
-you automatically get the
-[polymer_expressions][] package,
-which provides an expressive syntax for use with templates.
-
-
-Try It Now
------------
-Add the polymer.dart package to your pubspec.yaml file:
-
-```yaml
-dependencies:
-  polymer: ">=0.16.0 <0.17.0"
-```
-
-Instead of using `any`, we recommend using version ranges to avoid getting your
-project broken on each release. Using a version range lets you upgrade your
-package at your own pace. You can find the latest version number at
-<https://pub.dartlang.org/packages/polymer>.
-
-
-Building and Deploying
-----------------------
-
-To build a deployable version of your app, add the polymer transformers to your
-pubspec.yaml file:
-
-```yaml
-transformers:
-- polymer
-```
-
-Then, run `pub build`.  The polymer transformers assume all files under `web`
-are possible entry points, this can be adjusted with arguments in your
-pubspec.yaml file. For example, you can say only `web/index.html` is an entry
-point as follows:
-
-```yaml
-transformers:
-- polymer:
-    entry_points: web/index.html
-```
-
-Here is a list of arguments used by the polymer transformers:
-* js: whether to load JS code directly. By default polymer converts your app's
-  html file to load the compiled JS code directly. Setting this parameter to
-  false will keep a dart script tag and the `dart.js` script tag on the page.
-
-* csp: whether to load a Content Security Policy (CSP) compliant JS file.
-  Dart2js generates two JS files, one that is not CSP compilant and one that is.
-  By default, polymer uses the former becuase it's likely more efficient, but
-  you can choose the latter by setting this flag.
-
-* entry_points: can be a list of entry points or, for convenience, a single
-  entry point as shown above.
-
-For example, this specification includes 2 entrypoints and chooses the CSP
-compliant JS file:
-
-```yaml
-transformers:
-- polymer:
-    entry_points:
-    - web/index.html
-    - web/index2.html
-    csp: true
-```
-
-Testing
--------
-
-Polymer elements can be tested using either the original `unittest` or new `test` packages. In both cases the easiest way to create a test is by using the default main from `polymer/init.dart` and then defining all your tests inside of a method marked with an `@whenPolymerReady` annotation.
-
-```dart
-import 'package:polymer/polymer.dart';
-export 'package:polymer/init.dart';
-
-@whenPolymerReady
-void runTests() {
-  // Define your tests here.
-}
-```
-
-You will also need to define a custom html file for your test (see the README for the testing package you are using for more information on this).
-
-**Note**: If you are using the new `test` package, it is important that you add the `test` transformer after the polymer transformer, so it should look roughly like this:
-
-```yaml
-transformer:
-- polymer:
-    entry_points:
-      - test/my_test.html
-- test/pub_serve:
-    $include: test/**_test{.*,}.dart
-```
-
-Contacting Us
--------------
-
-Please file issues in our [Issue Tracker][issues] or contact us on the
-[Dart Web UI mailing list][mailinglist].
-
-We also have the [Web UI development list][devlist] for discussions about
-internals of the code, code reviews, etc.
-
-[wc]: http://dvcs.w3.org/hg/webcomponents/raw-file/tip/explainer/index.html
-[pub]: http://www.dartlang.org/docs/pub-package-manager/
-[cs]: http://www.chromium.org/developers/testing/webkit-layout-tests
-[cs_lucid]: http://gsdview.appspot.com/dartium-archive/continuous/drt-lucid64.zip
-[cs_mac]: http://gsdview.appspot.com/dartium-archive/continuous/drt-mac.zip
-[cs_win]: http://gsdview.appspot.com/dartium-archive/continuous/drt-win.zip
-[dartium_src]: http://code.google.com/p/dart/wiki/BuildingDartium
-[TodoMVC]: http://todomvc.com/
-[issues]: https://github.com/dart-lang/polymer-dart/issues/new
-[mailinglist]: https://groups.google.com/a/dartlang.org/forum/?fromgroups#!forum/web-ui
-[devlist]: https://groups.google.com/a/dartlang.org/forum/?fromgroups#!forum/web-ui-dev
-[overview]: http://www.dartlang.org/articles/dart-web-components/
-[tools]: https://www.dartlang.org/articles/dart-web-components/tools.html
-[spec]: https://www.dartlang.org/articles/dart-web-components/spec.html
-[features]: https://www.dartlang.org/articles/dart-web-components/summary.html
-[home_page]: https://www.dartlang.org/polymer-dart/
-[polymer_expressions]: http://pub.dartlang.org/packages/polymer_expressions
-[polymer]: http://www.polymer-project.org/