update readme

README.rst

@@ -16,27 +16,25 @@ Overview
     :target: https://gitlab.com/rhab/PyOTRS/commits/master
     :alt: Coverage Report
 
-.. |DocsBuildStatus| image:: https://readthedocs.org/projects/pyotrs/badge/?version=latest
-    :target: https://pyotrs.readthedocs.org/en/latest/index.html
+.. |DocsBuildStatus| image:: https://readthedocs.org/projects/pyotrs/badge/?version=stable
+    :target: https://pyotrs.readthedocs.org/en/stable/index.html
     :alt: Docs Build Status
 
 .. |LicenseBadge| image:: https://img.shields.io/badge/license-MIT-blue.svg
-    :target: https://gitlab.com/rhab/PyOTRS/raw/master/LICENSE
+    :target: https://gitlab.com/rhab/PyOTRS/-/blob/master/LICENSE
     :alt: MIT licensed
 
-.. |PythonVersions| image:: https://img.shields.io/badge/python-2.7%2C%203.3%2C%203.4%2C%203.5%2C%203.6-blue.svg
-    :alt: python: 2.7, 3.4, 3.5, 3.6, 3.7
+.. |PythonVersions| image:: https://img.shields.io/badge/python-2.7%2C%203.4%2C%203.5%2C%203.6%2C%203.7%2C%203.8-blue.svg
+    :alt: python: 2.7, 3.4, 3.5, 3.6, 3.7, 3.8
 
 
-
-
-PyOTRS is a Python wrapper for accessing `OTRS <https://www.otrs.com/>`_ (Version 5 or 6) using the
-REST API.
+PyOTRS is a Python wrapper for accessing `OTRS <https://www.otrs.com/>`_ (Version 5, 6, 7 or 8) using the
+(GenericInterface) REST API.
 
 Warning
 =======
 
-    Please upgrade PyOTRS to atleast version 0.7.0 if you are using OTRS 6.0.27, 7.0.16 or
+.. warning:: Please upgrade PyOTRS to atleast version 0.7.0 if you are using OTRS 6.0.27, 7.0.16 or
     newer. See `issue 27 <https://gitlab.com/rhab/PyOTRS/-/issues/27>`_ for more details.
 
 Features