add table of contents to readme

README.md

@@ -2,6 +2,13 @@
 
 Modern stacker game with every polyominoes from size 1 to 15, made in C++ with [SFML 3](https://www.sfml-dev.org/)!
 
+- [Download](#download)
+- [How to play](#how-to-play)
+- [Features](#features)
+- [Manual build](#manual-build)
+- [Benchmarks](#benchmarks)
+- [Credits](#credits)
+
 ## Download
 
 You can download the latest release [here](https://git.ale-pri.com/TetrisNerd/jminos/releases)!  
@@ -43,16 +50,20 @@ You will find more infos about the Rotation System, the scoring system, or the d
 ### Screenshots
 
 Pentedecamino jumpscare
-![](./doc/readme/big_piece.png)
+
+![Screenshot1](./doc/readme/big_piece.png)
 
 Pieces select screen
-![](./doc/readme/pieces_selection.png)
+
+![Screenshot2](./doc/readme/pieces_selection.png)
 
 AutoRS demonstration
-![](./doc/readme/rotations.gif)
+
+![Video1](./doc/readme/rotations.gif)
 
 0° spins demonstration
-![](./doc/readme/rotation_0.gif)
+
+![Video2](./doc/readme/rotation_0.gif)
 
 ## Manual build