Fixed #1957 -- Added docs for 'version' to docs/django-admin.txt

git-svn-id: http://code.djangoproject.com/svn/django/trunk@2950 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/django-admin.txt

@@ -325,6 +325,16 @@ setting the Python path for you.
 Displays a help message that includes a terse list of all available actions and
 options.
 
+--version
+---------
+
+Displays the current Django version.
+
+Example output::
+
+    0.9.1
+    0.9.1 (SVN)
+
 Extra niceties
 ==============