org-tests/index.org: Hint to 'make test'

org-tests/index.org

@@ -88,6 +88,12 @@ full path to the required Emacs executable).
 : cd /path/to/org-mode/testing
 : Emacs -Q -batch -l org-test.el -eval "(setq org-confirm-babel-evaluate nil)" -f org-test-run-batch-tests'
 
+In recent versions of Emacs and Org-mode a test run can be triggered
+using the =make= program.
+
+: cd /path/to/org-mode
+: make test
+
 ** Run tests from within Emacs
 
 To run the tests from within Emacs itself.