Update README to make it less xeus-python focused (#49)

Author: martinRenou

README.md

@@ -1,45 +1,27 @@
-# xeus-python + JupyterLite demo
+# xeus kernels + JupyterLite demo
 
 [![lite-badge](https://jupyterlite.rtfd.io/en/latest/_static/badge.svg)](https://jupyterlite.github.io/xeus-python-demo/notebooks/?path=demo.ipynb)
 
-xeus-python + JupyterLite deployed as a static site to GitHub Pages, for demo purposes.
+xeus kernels + JupyterLite deployed as a static site to GitHub Pages, for demo purposes.
 
 ## ✨ Try it in your browser ✨
 
 https://jupyterlite.github.io/xeus-python-demo/notebooks/?path=demo.ipynb
 
-## ≠ How does it compare to the Pyodide kernel?
-
-#### Pyodide kernel:
-
-- Is based on [Pyodide](https://github.com/pyodide/pyodide)
-- Uses [IPython](https://github.com/ipython/ipython) for the code execution (access to IPython magics, support for the inline Matplotlib backend, *etc*)
-- Provides a way to dynamically install packages with ``piplite`` (**e.g.** ``await piplite.install("ipywidgets")``)
-- **Does not support** sleeping with ``from time import sleep``
-- **Does not support** pre-installing packages
-
-#### jupyterlite-xeus-python:
-
-- Is based on [xeus-python](https://github.com/jupyter-xeus/xeus-python)
-- Uses [IPython](https://github.com/ipython/ipython) for the code execution (access to IPython magics, support for the inline Matplotlib backend, *etc*)
-- **Does not provide** a way to dynamically install packages (yet. We are working on building a ``mamba`` package manager for WASM)
-- **Supports** sleeping with ``from time import sleep``
-- **Supports** pre-installing packages from ``emscripten-forge`` and ``conda-forge``, by providing an ``environment.yml`` file defining the runtime environment
-
 ## 💡 How to make your own deployment
 
 ![Deploy your own](deploy.gif)
 
 Then your site will be published under https://{USERNAME}.github.io/{DEMO_REPO_NAME}
 
-## 📦 How to install extra packages
+## 📦 How to install kernels and packages
 
-You can pre-install extra packages for xeus-python by adding them to the ``environment.yml`` file.
+You can install a specific kernels and extra packages by adding them to the ``environment.yml`` file.
 
 For example, if you want to create a JupyterLite deployment with NumPy and Matplotlib pre-installed, you would need to edit the ``environment.yml`` file as following:
 
 ```yml
-name: xeus-python-kernel
+name: xeus-kernel
 channels:
   - https://repo.mamba.pm/emscripten-forge
   - conda-forge
@@ -49,7 +31,36 @@ dependencies:
   - matplotlib
 ```
 
+Instead, if you'd like to use the R kernel and the coursekata package pre-installed, you can edit the ``environment.yml`` as following:
+
+```yml
+name: xeus-kernel
+channels:
+  - https://repo.mamba.pm/emscripten-forge
+  - conda-forge
+dependencies:
+  - xeus-r
+  - r-coursekata
+```
+
 Only ``no-arch`` packages from ``conda-forge`` and packages from ``emscripten-forge`` can be installed.
 - **How do I know if a package is ``no-arch`` on ``conda-forge``?** ``no-arch`` means that the package is OS-independent, usually pure-python packages are ``no-arch``. To check if your package is ``no-arch`` on ``conda-forge``, check if the "Platform" entry is "no-arch" in the https://beta.mamba.pm/channels/conda-forge?tab=packages page. If your package is not ``no-arch`` but is a pure Python package, then you should probably update the feedstock to turn your package into a ``no-arch`` one.
 ![](noarch.png)
 - **How do I know if my package is on ``emscripten-forge``?** You can see the list of packages pubished on ``emscripten-forge`` [here](https://beta.mamba.pm/channels/emscripten-forge?tab=packages). In case your package is missing, or it's not up-to-date, feel free to open an issue or a PR on https://github.com/emscripten-forge/recipes.
+
+## ≠ How does xeus-python lite compare to the Pyodide kernel?
+
+#### Pyodide kernel:
+
+- Is based on [Pyodide](https://github.com/pyodide/pyodide)
+- Provides a way to dynamically install packages with ``piplite`` (**e.g.** ``await piplite.install("ipywidgets")``)
+- **Does not support** sleeping with ``from time import sleep``
+- **Does not support** pre-installing packages
+
+#### xeus-python lite:
+
+- Is based on [xeus-python](https://github.com/jupyter-xeus/xeus-python)
+- **Does not provide** a way to dynamically install packages (yet. We are working on building a ``mamba`` package manager for WASM)
+- **Supports** sleeping with ``from time import sleep``
+- **Supports** pre-installing packages from ``emscripten-forge`` and ``conda-forge``, by providing an ``environment.yml`` file defining the runtime environment
+

environment.yml

@@ -1,8 +1,8 @@
-name: xeus-python-kernel
+name: xeus-kernel
 channels:
   - https://repo.mamba.pm/emscripten-forge
   - conda-forge
 dependencies:
-  - python=3.11
+  - python
   - xeus-python
   - ipycanvas