Github tagline is misleading

[romgrk]

I see that the tagline is "CSS-in-JS library designed for high performance style composition". As far as I know, emotion is the least performant of all the styling options I've benchmarked, as the library regularly adds from 10-20% runtime overhead. That statement is misleading and should probably be switched to highlight a different feature of the project.

The Performance page in the docs has a similar issue, it doesn't seem to accurately reflect real-world observations.