Update README.md

Author: digitalillusions

README.md

@@ -1,5 +1,7 @@
 ![](images/logo_as_path.svg)
 
+[![Documentation Status](https://readthedocs.org/projects/blender-sequence-loader/badge/?version=latest)](https://blender-sequence-loader.readthedocs.io/en/latest/?badge=latest)
+
 This is an addon for Blender 3.1+ (might work with 2.8+ but has not been tested) that enables loading of file sequences. The addon comes bundled together with [meshio](https://github.com/nschloe/meshio) which enables the loading of geometric data from a multitude of file formats. As stated there, the supported formats are listed in the following. Note that not all of the formats have been tested and some issues may still occur.
 
 > [Abaqus](http://abaqus.software.polimi.it/v6.14/index.html) (`.inp`),