Impressive demo! Within 10 seconds I created the app, made an edit and saw my slides reload in realtime.

Thanks, that demo is all courtesy of Sandstorm - all I had to do was add the link to the README.

I'm thinking we need to revise the "No Singletons" section of the KJ (Cap'n Proto / Sandstorm) style guide... ;)

https://github.com/sandstorm-io/capnproto/blob/master/style-...

Hah, such strong language.

I must admit though I AM mutable and globally accessible

Nice!

This is great! I'm eager to deploy it on my sandstorm instance!

Awesome! But I need images! Would love to use this.

Looks like images work just fine.

    ![test](https://i.imgur.com/Qjmt6dD.png)

It's GitHub Flavored Markdown.

https://guides.github.com/features/mastering-markdown/

It also seems to support HTML:

   <img src="https://i.imgur.com/Qjmt6dD.png">

At some point, Sandstorm will actually disallow embedding off-site resources via Content-Security-Policy since otherwise it is trivial to leak data out of a Sandstorm app, something we'd like to prevent. (Currently, this client-side sandbox is incomplete.)

Yes, a simple image upload feature would be most helpful. But this is sweet!! Like the markdown-based input better than Google Powerpoint.

If you need more, try a similar site I've just made: http://2sli.de