docs(README): update README.md with new rake tasks

Author: IgorMinar

README.md

@@ -15,15 +15,31 @@ it makes development fun!
 * Tutorial: http://docs.angularjs.org/tutorial
 * API Docs: http://docs.angularjs.org
 * Developer Guide: http://docs.angularjs.org/guide
+* Contribution guidelines: http://docs.angularjs.org/misc/contribute
 
-Compiling
+Building AngularJS
 ---------
-    rake compile
+[Once you have your environment setup](http://docs.angularjs.org/misc/contribute) just run:
+
+    rake package
+
 
 Running Tests
 -------------
-    ./server.sh                          # start the server
-    open http://localhost:9876/capture   # capture browser
-    ./test.sh                            # run all unit tests
+Running tests requires installation of [Testacular](http://vojtajina.github.com/testacular):
+
+    sudo npm install -g testacular
+
+To execute all unit tests, use:
+
+    rake test:unit
+
+To execute end-to-end (e2e) tests, use:
 
+    rake package
+    rake webserver &
+    rake test:e2e
 
+To learn more about the rake tasks, run `rake -T` and also read our
+[contribution guidelines](http://docs.angularjs.org/misc/contribute) and instructions in this
+[commit message](https://github.com/angular/angular.js/commit/9d168f058f9c6d7eeae0daa7cb72ea4e02a0003a).