Update installation docs with PyPI instructions

Author: neuromechanist

docs/user-guide/installation.md

@@ -2,9 +2,23 @@
 
 There are several ways to install EMGIO depending on your needs.
 
+## From PyPI (Recommended)
+
+The easiest way to install EMGIO is from PyPI:
+
+```bash
+pip install emgio
+```
+
 ## From GitHub Repository
 
-The recommended way to install the latest version of EMGIO is directly from the GitHub repository:
+To install the latest development version directly from GitHub:
+
+```bash
+pip install git+https://github.com/neuromechanist/emgio.git
+```
+
+Or clone and install:
 
 ```bash
 git clone https://github.com/neuromechanist/emgio.git
@@ -14,51 +28,66 @@ pip install .
 
 ## Development Installation
 
-For development purposes, you can install EMGIO in editable mode:
+For development purposes, install EMGIO in editable mode with dev dependencies:
 
 ```bash
 git clone https://github.com/neuromechanist/emgio.git
 cd emgio
-pip install -e .
+pip install -e ".[dev]"
 ```
 
 This allows you to modify the source code and see the changes without reinstalling.
 
+## Optional Dependencies
+
+EMGIO provides optional dependency groups:
+
+```bash
+# Development tools (pytest, ruff, coverage)
+pip install emgio[dev]
+
+# Documentation tools (mkdocs, mkdocstrings)
+pip install emgio[docs]
+
+# All optional dependencies
+pip install emgio[all]
+```
+
 ## Dependencies
 
-EMGIO has the following dependencies:
+EMGIO has the following core dependencies:
 
 | Dependency    | Purpose                | Minimum Version |
-|---------------|------------------------|----------------|
-| numpy         | Array operations       | -              |
-| pandas        | Data manipulation      | -              |
-| scipy         | Signal processing      | -              |
-| matplotlib    | Visualization          | -              |
-| pyedflib      | EDF/BDF file handling  | -              |
+|---------------|------------------------|-----------------|
+| numpy         | Array operations       | >=1.20.0        |
+| pandas        | Data manipulation      | >=1.3.0         |
+| scipy         | Signal processing      | >=1.7.0         |
+| matplotlib    | Visualization          | >=3.4.0         |
+| pyedflib      | EDF/BDF file handling  | >=0.1.30        |
+| wfdb          | WFDB format support    | >=4.0.0         |
 
-These dependencies will be automatically installed when you install EMGIO.
+These dependencies are automatically installed when you install EMGIO.
 
-## Testing
+## Python Version
 
-To run the tests, you need to install the test dependencies:
+EMGIO requires Python 3.11 or later. We test on Python 3.11, 3.12, 3.13, and 3.14.
 
-```bash
-pip install -r test-requirements.txt
-```
+## Testing
 
-Then you can run the tests with:
+To run the tests:
 
 ```bash
+pip install -e ".[dev]"
 pytest
 ```
 
 ## Verifying Installation
 
-You can verify that EMGIO is correctly installed by running:
+Verify that EMGIO is correctly installed:
 
 ```python
 import emgio
 print(emgio.__version__)
 ```
 
-If you don't see any error messages, EMGIO is installed correctly. 
+You should see the version number (e.g., `0.2.0`) without any errors.