Update readme and contributors guide

Author: christian-kreuzberger-dtx

CONTRIBUTING.md

@@ -0,0 +1,6 @@
+# Contributing Guide
+
+Please follow the contribution guidelines provided within the keptn/keptn repo: 
+
+* https://github.com/keptn/keptn/blob/master/CODE_OF_CONDUCT.md
+* https://github.com/keptn/keptn/blob/master/CONTRIBUTING.md

README.md

@@ -2,12 +2,18 @@
 
 This directory contains and refers to examples in order to explore the functionality of Keptn.
 
-### Maintained Examples
+## Structure
+
+Please take a look at the [Releases page](https://github.com/keptn/examples/releases) and the branches available within 
+ this repo.
+
+## Maintained Examples
 
 Maintained examples are updated with every keptn release to use the latest features, current guidelines and best practices, as well as to update command syntax, output, or changed prerequisites.
 
 |Name | Version | Description | 
 ------------- | ------------- | ------------ |
+| **onboard-carts** | [0.6.0.beta2](https://github.com/keptn/examples/tree/release-0.6.0.beta2) | This example allows to demonstrate the [keptn usecases](https://keptn.sh/docs/0.6.0/usecases/). |
 | **onboard-carts** | [0.5.0](https://github.com/keptn/examples/tree/release-0.5.0) | This example allows to demonstrate the [keptn usecases](https://keptn.sh/docs/0.5.0/usecases/). |
 | **onboard-carts** | [0.4.0](https://github.com/keptn/examples/tree/release-0.4.0) | This example allows to demonstrate the [keptn usecases](https://keptn.sh/docs/0.4.0/usecases/). |
 | **onboard-carts** | [0.3.0](https://github.com/keptn/examples/tree/release-0.3.0) | This example allows to demonstrate the [keptn usecases](https://keptn.sh/docs/0.3.0/usecases/). |
@@ -17,6 +23,12 @@ Maintained examples are updated with every keptn release to use the latest featu
 <!-- See [Example Guidelines](guidelines.md) for a description of what goes
 in this directory, and what examples should contain. -->
 
-### Contributing
+## License
+
+See [LICENSE](LICENSE).
+
+## Contributing
+
+If you want to contribute, just create a PR on the master branch.
 
-Please see [CONTRIBUTING.md](CONTRIBUTING.md) for instructions on how to contribute.
+Please also see [CONTRIBUTING.md](CONTRIBUTING.md) instructions on how to contribute.