Updated Development (markdown)

Development.md

@@ -68,3 +68,14 @@ Since running the whole suite takes long, you can run one test like this:
 test_verify (test_verify.TestZfsEncryption) ... Preparing zfs filesystems...
 ```
 
+## Automaticly run test on save
+
+I use `entr` for this:
+
+```console
+root@ws1:/home/psy/zfs_autobackup# find zfs_autobackup/| entr -r ./tests/run_test test_verify.py
+```
+
+This will reexecute the specified test each time you save the files in your editor.
+
+