Update README.md

package/Runtime/Physics/README.md

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 # Physics
 
-## Intro
+Use Rigidbody and Collider components to make objects physical and collide with each other - without writing a single line of code.     
 
-Unity utilizes Nvidia's PhysiX engine while Needle utilizes [Rapier](https://rapier.rs/).
+Needle Engine supports Box-, Sphere-, Capsule- and Meshcolliders, gravity and drag settings as well as physics materials to control friction and bounciness.    
 
-But all you need to know is [the list of supported components](https://engine.needle.tools/docs/component-reference.html#physics) that work right out of the box.
-
----
-
-## Basics
-
-Physics in unity is comprised of two elements. The Rigidbody and the Collider where the rigidbody is the logic and the collider is the shape.
-
-Adding a rigidbody to an object without a collider will result in an object that is endlessly falling since gravity is applied to it. By adding a collider the object can finally collide with the ground and stop falling.
-
-Note that colliders can be in the children of an object that has a rigidbody and not only on the same game object.
-
-## Raycasting
-
-Raycasting is fundamentally like emitting a laser with limited length, and if the laser hits something, we get that contact as a result.
-
-For more information visit [documentation](https://engine.needle.tools/docs/getting-started/for-unity-developers.html#raycasting).
-
-## Snowglobe
-
-Showcases how to reset rigidbodies to their initial position. The scene works everywhere, including QuickLook.
+If you need more control you can use the built-in event functions to react to collision or trigger events or interact with the underlying physics engine (Rapier) directly.