Update Readme

Author: TiagoSilvaPereira

readme.md

@@ -6,6 +6,8 @@ If you want, you can see a live preview here:
 
 [Live Preview - Simple 3D FPS](https://simple-3d-fps-game.herokuapp.com/)
 
+![Image of the game](https://kingofcode.com.br/storage/images/projects/normal/xJbZiBBbs0Vaj6ZVEJ8sFmQoYV5SJKgDkRHsZVbL.jpeg)
+
 # Documentation
 
 All documentation is inside the ```/docs``` folder. Only open index.html on your preferred browser to see the complete documentation.
@@ -44,4 +46,4 @@ The skybox textures are based on textures from BabylonJS Playground Textures [av
 
 The Skull 3D model is based on a free model from TurboSquid website, [available here](https://www.turbosquid.com/FullPreview/Index.cfm/ID/623330).
 
-If you want to redistribute this model, please check the license [here](https://blog.turbosquid.com/royalty-free-license/).
+If you want to redistribute this model, please check the license [here](https://blog.turbosquid.com/royalty-free-license/).