README: Add another tool to list of alternatives

README.md

@@ -60,6 +60,7 @@ Usage: dust -b <dir>  (do not show percentages or draw ASCII bars)
 * [dutree](https://github.com/nachoparker/dutree)
 * [dua](https://github.com/Byron/dua-cli/)
 * [pdu](https://github.com/KSXGitHub/parallel-disk-usage)
+* [dirstat-rs](https://github.com/scullionw/dirstat-rs)
 * du -d 1 -h | sort -h
 
 Note: Apparent-size is calculated slightly differently in dust to gdu. In dust each hard link is counted as using file_length space. In gdu only the first entry is counted.