Added debug mode, space now doubles the vector amount and added a ReadMe

ReadMe.md

@@ -0,0 +1,31 @@
+# test_sdl
+
+It is just a playground for me to test SDL2 features
+
+## Run it
+
+You need to download Rust
+
+Then you clone this repository
+
+And laucnh it with :
+
+```Bash
+cargo build --release
+
+cargo run --release
+```
+
+## Controls
+
+W,A,S,D and Arrow Keys are for moving around the cube.
+
+Left Click teleports the block the cursors location
+
+Right Click cancels any velocity of the cube
+
+Tab toggles a debug mode where you can see the actual vector applied to the cube (maybe even more in the futur)
+
+Spacebar doubles the acceleration (to use with moderation)
+
+Bonus: Maintain the left click and moving(s) key(s) at the same time and it will store some momentum wich you can use when you release the click. Enjoy :)