doc: speed in readme (#42)

Co-authored-by: TomDarmon <tom.darmon@artefact.com>

README.md

@@ -28,6 +28,15 @@ This Git repository is dedicated to the development of a Python library aimed at
     <a href="https://artefactory-fr.github.io/track-reid/">Demo with better quality can be found here</a>
 </p>
 
+<div align="center">
+
+ | Model | Time difference | Time per iteration |
+ | --- | --- | --- |
+ | yolo + bytetrack | -- |  -- | -- |
+ | yolo + bytetrack + trackreid | +0.95% | +2e-6 s/it |
+
+</div>
+
 ## Installation
 
 To install the library, run the following command:
@@ -40,6 +49,8 @@ To install a specific version, run the following command:
 pip install git+https://github.com/artefactory-fr/track-reid.git@x.y.z
 ```
 
+</div>
+
 
 ## Usage