DOC: add how-to-run-unit-tests to README_SETUP

README_SETUP.md

@@ -10,6 +10,7 @@ This package requires the following software:
 - For running this library, a valid libcaosdb configuration is needed, for example a
   `.caosdb_client.json` file in your home directory or current working directory.  Please look at
   [`README_SETUP.md` in caosdb-cpplib](https://gitlab.indiscale.com/caosdb/src/caosdb-cpplib/-/blob/main/README_SETUP.md) for more information.
+* MOxUnit for unit tests, see below.
 
 ## Install and Load
 
@@ -22,6 +23,10 @@ This package requires the following software:
 
 ## Run Unit Tests
 
+* run `make test`
+
+### Requirements
+
 We use the standard test framework of Octave.
 
 See [this article](https://wiki.octave.org/Tests) for a primer and use