Make this repo the base template

[jtpio]

This repo should list of the dependencies and extensions that will be used in the other environments:

• JupyterLab 2.0
• nbresuse
• topbar extension to show memory usage
• base packages: numpy, pandas...

[jtpio]

There should also be instructions to explain how to create a new environment from this base template.

[jtpio]

The instructions can include the following screenshot: