Better example!

[AliciaSchep]

Since it seems like the example I had suggested (filter_loudly), while maybe a fun & useful function, was not the best for this particular use case maybe we can think up a better one for the README? (And perhaps use filter_loudly as an example function for when tidyeval not needed?). I'll try to find or think up a good, simple example to contribute, but thought I'd first poll if you or anyone else might already have one in mind...