Grega Bremec 65b1077868 add screenshots, finish integration description 2 hete
..
jupyterlab-kernels.png 65b1077868 add screenshots, finish integration description 2 hete
jupyterlab-notebook.png 65b1077868 add screenshots, finish integration description 2 hete
jupyterlab-welcome.png 3654b545f4 split docs across several files, add screenshot 2 hete