Update README.md

Author: DominicDirkx

README.md

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-[![Build Status](https://img.shields.io/circleci/project/github/tudat-team/tudat/master.svg?style=for-the-badge&logo=circleci)](https://circleci.com/gh/tudat-team/tudat)
-[![Build Status](https://img.shields.io/travis/tudat-team/tudat/master.svg?logo=travis&style=for-the-badge)](https://travis-ci.org/tudat-team/tudat)
-[![Platforms Supported](https://img.shields.io/conda/pn/tudat-team/tudat?color=orange&logo=anaconda&style=for-the-badge)](https://anaconda.org/tudat-team/tudat)
-
-Documentation for the Tudat project can be obtained at http://tudat.tudelft.nl.
+NOTE: This Tudat version is no longer supported. See https://docs.tudat.space/en/stable/ and https://github.com/tudat-team/tudat-bundle for the new version