Add image or basic demo to README

[nmstoker]

This looks like a really useful project, so thank you for sharing it.

However, when people first read the README, because it is all text, it doesn't really reinforce if it's the kind of tool a potential user might be looking for - there are no images or brief demos of how it actually works (ie the UI) and that's a key part of assessing it. You'd typically want a bit more confidence before you take the plunge and install it.

I had a feeling it was the kind of tool I was after but I couldn't tell till I found a tweet showing a v. quick demo of the UI (here)

Therefore would it be okay to add a screenshot / brief demo of the UI (or at least link to somewhere that sort of thing is hosted)?

[nmstoker]

This was resolved by #113 so closing
Thanks!