Add -S/--use-system-packages flag to usage docs

1stvamp · 1stvamp · commit 1f7fc2e3e6d3 · 2014-12-09T15:15:10.000Z
diff --git a/doc/usage.rst b/doc/usage.rst
@@ -122,6 +122,11 @@ few command line options:
    virtualenvs created with Python 3.3 are not bootstrapped with
    setuptools or pip.)
 
+.. cmdoption:: -S, --use-system-packages
+
+   Enable the use of system site-packages in the created virtualenv
+   by passing the ``--system-site-packages`` flag to ``virtualenv``.
+
 
 Advanced usage
 ==============
