update readme

Author: arch

README.md

@@ -1,5 +1,7 @@
 # Python Funscript Editor
 
+[![Documentation Status](https://readthedocs.org/projects/python-funscript-editor/badge/?version=latest)](https://python-funscript-editor.readthedocs.io/en/latest/?badge=latest)
+
 Simple Funscript Editor written in Python with an motion tracking add-on to partially automate the generation of funscripts for static video scenes like vr videos.
 
 ## Getting Started

docs/app/mkdocs.yml

@@ -5,6 +5,7 @@ nav:
   - Home: 'index.md'
   - User Guide:
     - 'OFS Integration': 'user-guide/ofs-integration.md'
+    - 'Usage and Settings': 'user-guide/usage.md'
     - 'UI': 'user-guide/ui.md'
     - 'Algorithms': 'user-guide/algorithms.md'
     - 'Config': 'user-guide/config.md'