Update README.md

Update an improve, removing obsolete information.

README.md

@@ -1,41 +1,43 @@
 # Nebula and Opal: Rich SWT Widgets
-Welcome to the Eclipse Nebula project. This repositority contains a large set of UI elements that can be used in 
-Fat or Thin client applications based on Java and SWT.
+Welcome to the [Eclipse Nebula project](https://projects.eclipse.org/projects/technology.nebula).
+
+This repositority contains a large set of UI elements that can be used in fat or thin client applications based on Java and SWT.
 
 ## Download
-Please have a look at https://www.eclipse.org/nebula/downloads.php
+Downloads are available at the following location:
+* [https://download.eclipse.org/nebula/updates/](https://download.eclipse.org/nebula/updates/)
+
+These sites provide both mature, stable widgets as well as incubating widgets; the latter are clearly marked as *incubating* and may break API from release to release.
 
-You'll find update sites for all releases and also for the latest build
+Refer to the [general document](https://eclipse.dev/justj/?page=tools#p2-anatomy) for details about the update site structure.
 
 ## Contact
 * [Issues](https://github.com/eclipse/nebula/issues)
 * [Questions](https://github.com/eclipse/nebula/discussions) 
-* [Mailing list](https://dev.eclipse.org/mailman/listinfo/nebula-dev)
+* [Mailing List](https://dev.eclipse.org/mailman/listinfo/nebula-dev)
 
 ## Contribute
-We can accept your patches if you have signed the [Eclipse Contributors Agreement (ECA)](https://wiki.eclipse.org/ECA) 
-which ensures users of these libraries that they can use your code without getting into any legal trouble.
 
-For every patch we require a [corresponding GitHub issue.](https://github.com/eclipse/nebula/issues)
+We can accept your patches if you have [properly set up an account](https://github.com/eclipse-platform/.github/blob/main/CONTRIBUTING.md#setting-up-your-eclipse-and-github-account).
+
+For every patch we require a [corresponding GitHub issue](https://github.com/eclipse/nebula/issues).
+See the [recommended workflow](https://github.com/eclipse-platform/.github/blob/main/CONTRIBUTING.md#setting-up-your-eclipse-and-github-account) for guidelines.
 
 ## Setup a Development enviroment
 
+Please use the following automated setup to configure a development environment pull requests:
+
 [![Create Eclipse Development Environment for Eclipse Nebula](https://download.eclipse.org/oomph/www/setups/svg/Nebula.svg)](https://www.eclipse.org/setups/installer/?url=https://raw.githubusercontent.com/eclipse/nebula/master/configuration.setup&show=true "Click to open Eclipse-Installer Auto Launch or drag into your running installer")
 
 ## Building on our build server
-After admin approval, pull requests gets build by these two jobs:
- * [Stable Widgets](https://ci.eclipse.org/nebula/job/nebula.stable.github/)
- * [Incubation Widgets](https://ci.eclipse.org/nebula/job/nebula.incubation.github/)
+After admin approval, pull requests get built by this job:
+ * [Pull Request Builds](https://ci.eclipse.org/nebula/job/nebula-build/view/change-requests/)
 
 ## Building locally
     git clone https://github.com/eclipse/nebula.git
-    cd releng/org.eclipse.nebula.nebula-release
     mvn verify
-
-    cd releng/org.eclipse.nebula.nebula-incubation
-    mvn verify (or install to install in the local maven repo)
 
-More info can be found on the [the builds page](https://wiki.eclipse.org/Nebula/Builds)
+More info can be found on Nebula's [Build Server](https://ci.eclipse.org/nebula/).
 
 ## New Committers
 Before you decide to contribute your code to Eclipse, keep in mind that your code must follow the EPL, Eclipse's Public License.  
@@ -45,14 +47,13 @@ A good overview of what this entails and how this affects you [can be read here]
 
 There are a number of ways you can contribute. 
 
-* A new project inside Nebula
-* New widgets in the Nebula Release project (production ready).
-* New widgets in the Nebula Incubation project.
-* Maintain existing widgets
+* A new project inside Nebula.
+* New widgets in the Nebula project.
+* Maintain existing widgets.
 
-If you choose any of these option contact the Nebula devs through the 
+If you choose any of these option contact the Nebula developers through the 
 [mailing list](https://dev.eclipse.org/mailman/listinfo/nebula-dev)
-and state your intentions.
+and state your intentions, or open an issue.
 
 ## New Widgets
 The 'New Widget' process is described here: