Merge pull request ACEsuit#283 from ACEsuit/develop

update installation with PyPI

Author: ilyes319

README.md

@@ -47,6 +47,18 @@ Requirements:
 
 (for openMM, use Python = 3.9)
 
+### pip installation
+
+To install via `pip`, follow the steps below:
+
+```sh
+pip install --upgrade pip
+pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu118
+pip install mace-torch
+```
+
+For CPU or MPS (Apple Silicon) installation, use `pip install torch torchvision torchaudio` instead.
+
 ### conda installation
 
 If you do not have CUDA pre-installed, it is **recommended** to follow the conda installation process:
@@ -67,7 +79,7 @@ git clone https://github.com/ACEsuit/mace.git
 pip install ./mace
 ```
 
-### pip installation
+### pip installation from source
 
 To install via `pip`, follow the steps below: