Update README.md

README.md

@@ -10,7 +10,7 @@ A visualization-purposed force simulation library.
 
 <img width="712" alt="ForceDirectedGraphLight" src="https://github.com/li3zhen1/Grape/assets/45376537/e0e8049d-25c2-4e5c-9623-6bf43ddddfa5">
 
-#### Examples
+### Examples
 
 This is a force directed graph visualizing the data from [Force Directed Graph Component](https://observablehq.com/@d3/force-directed-graph-component), running at 120FPS on a SwiftUI Canvas. Take a closer look at the animation:
 
@@ -20,9 +20,9 @@ https://github.com/li3zhen1/Grape/assets/45376537/6a1c9510-8af6-4967-9c05-c304b2
 
 
 
-#### Features
+### Features
 
-|   | 2D | 3D | Metal |
+|   | 2D simd | 3D simd | Metal |
 | --- | --- | --- | --- |
 | **NdTree** | ✅ | 🚧 |  |
 | **Simulation** | ✅ | 🚧 | 🚧 |
@@ -35,7 +35,7 @@ https://github.com/li3zhen1/Grape/assets/45376537/6a1c9510-8af6-4967-9c05-c304b2
 | **SwiftUI View** | 🚧 |  |  |
 
 
-#### Usage
+### Usage
 
 ```swift
 import ForceSimulation
@@ -56,6 +56,6 @@ sim.createCollideForce(radius: .constant(5))
 
 See [Example](https://github.com/li3zhen1/Grape/tree/main/Examples/GrapeView) for more details.
 
-#### Perfomance
+### Perfomance
 
 Grape uses simd to calculate position and velocity. Currently it takes 0.046 seconds to iterate 120 times over the example graph (with 77 vertices, 254 edges, with manybody, center and link forces, release build, on a 32GB M1 Max).