Update to mark as obsolete

README.md

@@ -2,6 +2,9 @@
 
 Simple tool, meant to be built and run (not installed).
 
+OBSOLETE: has been moved into tests for libscterm, and can be invoked using
+`make test` there.
+
 ## Build
 
 `make`
@@ -14,4 +17,3 @@ after installing dependencies:
 ## Run
 
 `./progress`
-