added link to demo video, preserve trailing spaces in md

PaulKlinger · PaulKlinger · commit d19e930c1359 · 2022-05-29T23:30:27.000+01:00
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
@@ -5,6 +5,7 @@ repos:
     rev: v3.2.0
     hooks:
     -   id: trailing-whitespace
+        args: [--markdown-linebreak-ext=md]
     -   id: end-of-file-fixer
     -   id: check-yaml
     -   id: check-added-large-files
diff --git a/README.md b/README.md
@@ -18,7 +18,7 @@ tracks_0 = tracker.update(boxes_0)
 #                            xmin ymin xmax ymax track_id
 assert tracks_0 == np.array([[10., 60., 50., 95., 1.],...])
 ```
-
-See the [demo](https://github.com/PaulKlinger/ioutrack/tree/main/demo) folder for more usage examples.
+Demo video: [https://youtu.be/BLMnY8K9HBE](https://youtu.be/BLMnY8K9HBE)  
+Code to generate the demo video is in the [demo](https://github.com/PaulKlinger/ioutrack/tree/main/demo) folder.
 
 Roughly 30x faster than [python/numpy implementation](https://github.com/abewley/sort).
diff --git a/demo/create_demo_video.ipynb b/demo/create_demo_video.ipynb
