Update README.md

README.md

@@ -27,4 +27,15 @@ Note that this is a one time process.
 
 Also, if you have issues building this package because of installation of the MbedTLS  package please see [this issue](https://github.com/sglyon/PlotlyJS.jl/issues/83).
 
+### Jupyterlab
+
+If you will be using this package from within Jupyterlab, please also install the plotly jupyterlab extension by running:
+
+
+```sh
+jupyter labextension install @jupyterlab/plotly-extension
+```
+
+See the [jupyterlab extension documentation](https://jupyterlab.readthedocs.io/en/stable/user/extensions.html) for more details.
+