Here's an actual example, compare the READMEs for these open source RSS readers:
https://github.com/samuelclay/NewsBlur/blob/master/README.md
https://github.com/SSilence/selfoss/blob/master/README.md
https://github.com/swanson/stringer/blob/master/README.md
https://github.com/Athou/commafeed/blob/master/README.md
https://github.com/feedbin/feedbin/blob/master/README.md
https://github.com/gothfox/Tiny-Tiny-RSS/blob/master/README....
Which ones jump out at you? Which ones are memorable? Which do you want to install/contribute to/star?
(I'm biased because I wrote one, but I was very intentional which how the README looks and reads!)