Adding Angular and dependent packages for testing

third_party/pkg/js/README.md

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+Dart JavaScript Interop
+===================
+
+The js.dart library allows Dart code running in the browser to
+manipulate JavaScript running in the same page.  It is intended to
+allow Dart code to easily interact with third-party JavaScript libraries.
+
+Warning
+-------
+
+The use of this library may result in a sizable increase in code size
+when compiled to JavaScript, because names cannot be minified. If the
+size of the generated JavaScript is a concern, use the [dart:js][dartjs]
+library.
+
+Documentation
+-------------
+
+See [API documentation][docs]. You should also watch this [video tutorial][video].
+
+Samples
+-------
+
+See [samples][samples] that demonstrate interaction with JavaScript
+code.  These include interoperation with the Google Maps JavaScript
+library, the Google Visualization JavaScript library, and Twitter's
+query API via JSONP.
+
+Usage
+-----
+
+The [Dart Editor][editor] now includes pub support.  To try out this
+library in the editor:
+
+1.  [Update to the latest editor][editor].
+
+2.  From the "File" menu, open a "New Application" (and make sure "Add
+        Pub support" is checked).
+
+3.  Add the following to your pubspec.yaml:
+
+        dependencies:
+          js: any
+
+
+4.  Under the "Tools" menu, run "Pub Install".
+
+5.  Try the following test Dart file:
+
+        import 'package:js/js.dart' as js;
+        
+        void main() {
+          js.context.alert('Hello from Dart via JS');
+        }
+        
+6.  Add the script to your HTML page:
+
+        <script src="packages/browser/dart.js"></script>
+        <script src="packages/browser/interop.js"></script> 
+
+Running Tests
+-------------
+
+First, use the [Pub Package Manager][pub] to install dependencies:
+
+    pub install
+
+To run browser tests on [Dartium], simply open **test/browser_tests.html**
+in Dartium.
+
+To run browser tests using JavaScript in any modern browser, first use the
+following command to compile to JavaScript:
+
+    dart2js -otest/browser_tests.dart.js test/browser_tests.dart
+
+and then open **test/browser_tests.html** in any browser.
+
+[d]: http://www.dartlang.org
+[mb]: http://www.dartlang.org/support/faq.html#what-browsers-supported
+[pub]: http://www.dartlang.org/docs/pub-package-manager/
+[Dartium]: http://www.dartlang.org/tools/dartium/
+[docs]: http://dart-lang.github.com/js-interop
+[samples]: http://dart-lang.github.com/js-interop/example
+[editor]: http://www.dartlang.org/docs/editor/getting-started/
+[video]: http://www.youtube.com/watch?v=QFuCFUd2Zsw
+[dartjs]: http://api.dartlang.org/docs/channels/stable/latest/dart_js.html