update readme

README.md

@@ -35,25 +35,38 @@ You can find the full demo example in this live [notebook](https://mybinder.org/
 For either Jupyter Notebooks or JupyterLab (versions 3.0 and above), you can install via pip or conda: 
 
 ```bash
-    pip install lux-api
+pip install lux-api
 ```
 
 or 
 
 ```bash
-    conda install -c conda-forge lux-api
+conda install -c conda-forge lux-api
 ```
 
 ## Setup in Jupyter Notebook, VSCode
 
-To use Lux in [Jupyter notebook](https://github.com/jupyter/notebook) or [VSCode](https://code.visualstudio.com/docs/python/jupyter-support), activate the notebook extension:
+## Setup in Jupyter Notebook, VSCode, JupyterHub
+
+To use Lux with any Jupyter notebook-based frontends (e.g., [Jupyter notebook](https://github.com/jupyter/notebook), [JupyterHub](https://github.com/jupyterhub/jupyterhub), or [VSCode](https://code.visualstudio.com/docs/python/jupyter-support)), activate the notebook extension:
 
 ```bash
-    jupyter nbextension install --py luxwidget
-    jupyter nbextension enable --py luxwidget
+jupyter nbextension install --py luxwidget
+jupyter nbextension enable --py luxwidget
 ```
 
 If the installation happens correctly, you should see two `- Validating: OK` after executing the two lines above.
+Note that you may have to restart the Jupyter Notebook server to ensure that the widget is displaying correctly.
+
+## Setup in Jupyter Lab
+
+Lux is compatible with both Jupyter Lab version 2 and 3. To use Lux in [Jupyter Lab](https://github.com/jupyterlab/jupyterlab), activate the lab extension:
+
+```bash
+jupyter labextension install @jupyter-widgets/jupyterlab-manager
+jupyter labextension install luxwidget
+```
+Note that JupyterLab and VSCode is supported only for lux-widget version >=0.1.2, if you have an earlier version, please upgrade to the latest version of [lux-widget](https://pypi.org/project/lux-widget/). Lux has only been tested with the Chrome browser. 
 
 If you encounter issues with the installation, please refer to [this page](https://lux-api.readthedocs.io/en/latest/source/guide/FAQ.html#troubleshooting-tips) to troubleshoot the installation. Follow [these instructions](https://lux-api.readthedocs.io/en/latest/source/getting_started/installation.html#manual-installation-dev-setup) to set up Lux for development purposes.