Improve README

README.md

@@ -41,34 +41,48 @@ A Jupyter / Leaflet bridge enabling interactive maps in the Jupyter notebook.
 Using conda:
 
 ```
-$ conda install -c conda-forge ipyleaflet
+conda install -c conda-forge ipyleaflet
 ```
 
 Using pip:
 
 ```
-$ pip install ipyleaflet
-$ jupyter nbextension enable --py --sys-prefix ipyleaflet # can be skipped for
-notebook 5.3 and above
+pip install ipyleaflet
 ```
 
-If you have JupyterLab, you will also need to install the JupyterLab extension:
+If you are using the classic Jupyter Notebook < 5.3 you need to run this extra command:
 
 ```
-$ jupyter labextension install @jupyter-widgets/jupyterlab-manager jupyter-leaflet
+jupyter nbextension enable --py --sys-prefix ipyleaflet
+```
+
+If you are using JupyterLab, you will need to install the JupyterLab extension:
+
+```
+jupyter labextension install @jupyter-widgets/jupyterlab-manager jupyter-leaflet
 ```
 
 ## Installation from sources
 
-For a development installation (requires npm):
+For a development installation (requires npm, you can install it with `conda install -c conda-forge nodejs`):
+
+```
+git clone https://github.com/jupyter-widgets/ipyleaflet.git
+cd ipyleaflet
+pip install -e .
+```
+
+If you are using the classic Jupyter Notebook you need to install the nbextension:
+
+```
+jupyter nbextension install --py --symlink --sys-prefix ipyleaflet
+jupyter nbextension enable --py --sys-prefix ipyleaflet
+```
+
+If you are using JupyterLab, you need to install the labextension for ipywidgets and ipyleaflet:
 
 ```
-$ git clone https://github.com/jupyter-widgets/ipyleaflet.git
-$ cd ipyleaflet
-$ pip install -e .
-$ jupyter nbextension install --py --symlink --sys-prefix ipyleaflet
-$ jupyter nbextension enable --py --sys-prefix ipyleaflet
-$ jupyter labextension install @jupyter-widgets/jupyterlab-manager js # If you are developing on JupyterLab
+jupyter labextension install @jupyter-widgets/jupyterlab-manager js
 ```
 
 Note for developers:
@@ -79,13 +93,13 @@ Note for developers:
  For automatically building the JavaScript code every time there is a change, run the following command from the ``ipyleaflet/js/`` directory:
 
  ```
- $ npm run watch
+ npm run watch
  ```
 
  If you are on JupyterLab you also need to run the following in a separate terminal:
 
  ```
- $ jupyter lab --watch
+ jupyter lab --watch
  ```
 
  Every time a JavaScript build has terminated you need to refresh the Notebook page in order to load the JavaScript code again.