Add screenshots to `README.md`

[Korb]

It's difficult to decide from a general description whether deploying applications is worth the time.

[avadhesh18]

There is a live preview at https://avadhesh18.github.io/rssTea/

[Korb]

@avadhesh18, that's wonderful! I'd prefer to view the demo as a useful and highly visual bonus to the basic description set. Considering it a replacement would be as odd as, say, ditching screenshots on Steam in favor of videos, or abandoning text descriptions of apps just because the app card includes a link to the app's website, where everything is already available. Hoping for your understanding.

[avadhesh18]

I see your point — that makes sense. I’ll add the screenshots to the README. If you’d like to push the changes yourself, I’ll be happy to review and approve them as well.