docs(cli): add PyYAML requirement notice

max-wittig · max-wittig · commit 017369f69eac · 2018-10-07T17:34:44.000+02:00
Fixes #606
diff --git a/docs/cli.rst b/docs/cli.rst
@@ -157,6 +157,11 @@ These options must be defined before the mandatory arguments.
 ``--output``, ``-o``
     Output format. Defaults to a custom format. Can also be ``yaml`` or ``json``.
 
+    **Notice:**
+
+        The `PyYAML package <https://pypi.org/project/PyYAML/>`_ is required to use the yaml output option.
+        You need to install it separately using ``pip install PyYAML``
+
 ``--fields``, ``-f``
     Comma-separated list of fields to display (``yaml`` and ``json`` output
     formats only).  If not used, all the object fields are displayed.
