Update docs

README.md

@@ -23,7 +23,7 @@
 
 <p align="center"><i>3 modes of nnn (light with filter, detail, du analyzer) with memory usage. Click for a demo video.</i></a></p>
 
-`nnn` is smooth... like butter. It's one of the fastest and most lightweight file managers, thanks to a **[highly optimized](https://github.com/jarun/nnn/wiki/performance)** code. And yet, it doesn't lack in features!
+`nnn` is a full-featured file manager for low-power, low-frequency, resource-limited devices and the regular desktop. It aims to be **[one of the fastest and most lightweight](https://github.com/jarun/nnn/wiki/performance)** file managers.
 
 It runs on Linux, macOS, Raspberry Pi, BSD, Cygwin, Linux subsystem for Windows and Termux on Android.