Update README.md

Author: mifi

README.md

@@ -42,4 +42,5 @@ stacktracify --help
 
 ## See also
 
-- https://github.com/gabmontes/source-map-cli (only takes one line at a time)
+- https://github.com/gabmontes/source-map-cli (only takes one line at a time)
+- https://github.com/janekp/mapstrace (not a CLI, not easy to use for any stack trace)