adding caching of dependencies

.github/workflows/tests.yml

@@ -25,6 +25,15 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
+    - name: Cache dependencies
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements*.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+
     - name: Install dependencies
       run: |
         sudo apt-get install -y libopenmpi-dev

CONTRIBUTING.md

@@ -0,0 +1,49 @@
+# Contributing
+
+We appreciate your interest in improving this project. Here are some guidelines:
+
+1. Fork the repository and create a new branch.
+2. Follow existing code styles and conventions.
+3. Write clear commit messages.
+4. Test your changes thoroughly.
+5. Open a Pull Request with a concise summary.
+
+## Setting Up the Development Environment
+
+To set up the development environment, follow these steps:
+
+1. **Clone the repository**:
+    ```sh
+    git clone https://github.com/your-username/JaxPM.git
+    cd JaxPM
+    ```
+
+2. **Create a virtual environment**:
+    ```sh
+    python -m venv --system-site-packages venv
+    source venv/bin/activate  # On Windows use `venv\Scripts\activate`
+    ```
+
+3. **Install the dependencies**:
+    ```sh
+    pip install -r requirements-test.txt
+    pip install -e .
+    ```
+
+4. **Install pre-commit hooks**:
+    ```sh
+    pre-commit install
+    ```
+    This will run code formatting and linting checks before each commit.
+
+## Running Tests
+
+To run the tests, use the following command:
+
+```sh
+pytest
+```
+
+Make sure all tests pass before submitting your changes.
+
+Thank you for contributing!