Merge pull request #37 from wind-python/doc/universal_zenodo_badge

Use universal zenodo badge for the README file

Author: SabineHaas

README.rst

@@ -2,8 +2,8 @@
     :target: https://travis-ci.org/wind-python/windpowerlib
 .. image:: https://coveralls.io/repos/github/wind-python/windpowerlib/badge.svg?branch=dev
     :target: https://coveralls.io/github/wind-python/windpowerlib?branch=dev
-.. image:: https://zenodo.org/badge/DOI/10.5281/zenodo.2542896.svg
-   :target: https://doi.org/10.5281/zenodo.2542896
+.. image:: https://zenodo.org/badge/DOI/10.5281/zenodo.824267.svg
+   :target: https://doi.org/10.5281/zenodo.824267
 
 Introduction
 =============