Add logo and update for latest Pluto

[barche]

This adds the logo and updates the run command for compatibility with the latest Pluto.jl. The logo makes things look a lot nicer in jupyterlab. I am not a Python expert, so there may be a less contorted way of doing this.

[fonsp]

Thanks! Can you rewrite it to maintain the single-file-package structure? I want this repo to be as slim as possible. Having no folders also means that you can write it in a github gist

[fonsp]

Oh and can you describe how you installed this as a jupyter lab extension? Should we register this package with pip? Any other suggestions? fonsp/PlutoUtils.jl#4

[barche]

Thanks! Can you rewrite it to maintain the single-file-package structure? I want this repo to be as slim as possible

Unfortunately I don't know how, I went for the package structure to have a reliable place to put the icon (the logo from Pluto.jl). An alternative might be to refer to the Pluto.jl dir, but that would require starting Julia in setup_plutoserver to get the path, which may change when the user updates Pluto.jl.

Oh and can you describe how you installed this as a jupyter lab extension?

All I needed to do is install the jupyterlab extension for the server proxy, then the package works as-is, adding a button in the jupyterlab launcher:

jupyter labextension install @jupyterlab/server-proxy

Should we register this package with pip?

That would be nice, yes. I want to use this in our custom jupyterlab single-user Docker image, having it in pip would make that simpler.

[fonsp]

Hey @barche !

I closed this PR because this repository (fonsp/pluto-on-binder) is really for only one purpose: a repository that binder can launch from to run the Pluto demo:

But the other purpose, Pluto as a jupyterlab extension, is something that still needs some work! See the discussion over at fonsp/PlutoUtils.jl#4 and the post by Max Koehler: https://www.maximiliankoehler.de/posts/pluto-server/