Update README installation and test instructions

.github/workflows/python-package.yml

@@ -0,0 +1,31 @@
+name: Python package
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.11"]
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -e ".[dev]"
+        pip install pytest
+    - name: Test with pytest
+      run: |
+        pytest

README.md

@@ -34,17 +34,17 @@ The `did` library provides a framework for managing and querying data that is or
     source venv/bin/activate  # On Windows, use `venv\Scripts\activate`
     ```
 
-3.  **Install the required dependencies:**
+3.  **Install the package and dependencies:**
     ```bash
-    pip install -r requirements.txt
+    pip install -e ".[dev]"
     ```
 
 ### Running the Tests
 
 To run the test suite, use the following command:
 
 ```bash
-find . -name "test_*.py" -exec python -m unittest {} +
+python -m unittest discover tests
 ```
 
 This will discover and run all the tests in the `tests` directory.