showcase more features for the desktop app

[rgbkrk]

Right now we show double-click to open. What else should we show to people?

Note that it's "as simple" as creating another React component like the other ones: https://github.com/nteract/nteract.io/blob/da1b9f624c7af6ba304e77ffa52faf2162479e2b/pages/desktop.js#L16-L38

Ideas:

• Compatibility with Jupyter Notebooks
• vdom support
• Other output type support

For other ideas, also check out @captainsafia's post about the notebook

[captainsafia]

I think the compatibility with Jupyter notebooks is a good one and will clarify a lot of confusion I have seen users exhibit.

Happy to help whoever takes this one create copy for these items for the website.