Update README.md

Apollo-Roboto · web-flow · commit 6f5533a145d0 · 2023-07-30T23:33:40.000-04:00
diff --git a/README.md b/README.md
@@ -6,6 +6,8 @@
 pip install pathschema
 ```
 
+[Check out the online demo!](https://apollo-roboto.github.io/python-pathschema/)
+
 # How to use
 
 ```python
