DOCS-#447: Add note about installation and setup in README (#449)

* add small note about setup and installation

* Update README.md

Co-authored-by: Doris Lee <dorisjunglinlee@gmail.com>

README.md

@@ -55,6 +55,7 @@ df = pd.read_csv("https://raw.githubusercontent.com/lux-org/lux-datasets/master/
 df
 ```
 When the dataframe is printed out, Lux automatically recommends a set of visualizations highlighting interesting trends and patterns in the dataset.
+
 <img src="https://github.com/lux-org/lux-resources/blob/master/readme_img/basicDemo.gif?raw=true"
      alt="Basic recommendations in Lux"
      style="width:900px" />
@@ -134,6 +135,8 @@ To find out more about other features in Lux, see the complete documentation on
 
 # Installation & Setup
 
+> **Note**: Lux's official package name is `lux-api` (not `lux`). After installing the package, remember to run the setup instructions for your notebook IDE, e.g., [jupyter notebook](#setup-in-jupyter-notebook-vscode-jupyterhub) and [jupyter lab](#setup-in-jupyter-lab).
+
 To get started, please follow both the installation and setup instructions in your command line.
 `lux-api` can be installed through [PyPI](https://pypi.org/project/lux-api/) or [conda-forge](https://github.com/conda-forge/lux-api-feedstock). 
 
@@ -186,4 +189,4 @@ Drop us a note [here](https://docs.google.com/forms/d/e/1FAIpQLSe4YL2WsblqjB13Fp
 - Try out these hands-on [exercises](https://mybinder.org/v2/gh/lux-org/lux-binder/master?urlpath=lab/tree/exercise) or [tutorials](https://mybinder.org/v2/gh/lux-org/lux-binder/master?urlpath=lab/tree/tutorial) on [Binder](https://mybinder.org/v2/gh/lux-org/lux-binder/master?urlpath=lab/). Or clone and run [lux-binder](https://github.com/lux-org/lux-binder) locally.
 - Join our community [Slack](https://communityinviter.com/apps/lux-project/lux) to discuss and ask questions.
 - Check out [our paper](https://arxiv.org/pdf/2105.00121.pdf) for more details on how Lux works under the hoods.
-- Report any bugs, issues, or requests through [Github Issues](https://github.com/lux-org/lux/issues). 
+- Report any bugs, issues, or requests through [Github Issues](https://github.com/lux-org/lux/issues).