Add a --quiet example

README.rst

@@ -1219,7 +1219,12 @@ Quiet output
 
 ``--quiet`` redirects all output that would otherwise go to ``stdout``
 and ``stderr``  (except for error messages) to ``/dev/null``.
-This doesn’t affect output to a file via ``--output`` or ``--download``.
+This doesn’t affect output to a file via ``--output`` or ``--download``:
+
+.. code-block:: bash
+
+    # There will be no output:
+    $ http --quiet httpbin.org/post enjoy='the silence'
 
 
 Viewing intermediary requests/responses