doc(README): updated

README.md

@@ -1,16 +1,9 @@
 # Terrain
 ## Overview
-This project demonstrates how to generate and render a 3D terrain using raymarching. Raymarching is a technique for rendering complex 3D scenes by calculating the distance from the camera to the nearest surface using a Signed Distance Field (SDF). The terrain is defined mathematically, allowing for smooth transitions, infinite detail, and dynamic surface generation without the need for complex geometry.
+Procedurally generated 3D terrain rendered in the fragment shader.
 
 <img src="assets/terrain.png" alt="image" width="700" height="auto">
 
-## Features
-- `Procedural Terrain Generation:` The terrain is procedurally generated using noise and fbm functions to define its height and surface details.
-- `Raymarching Algorithm:` The scene is rendered using raymarching, which marches rays from the camera into the scene, estimating the distance to the terrain surface.
-- `Dynamic Lighting:` Includes Phong lighting models to add realistic shading and highlights on the terrain.
-- `Shadows`
-- `Fog and Atmosphere:` Adds atmospheric effects such as fog to enhance the depth perception of the terrain.
-
 ## Usage
 Serve the `src` directory with a web server then visit `localhost` or 
 try [the live demo](https://ms0g.github.io/terrain/).