comment and simplify things

letsencrypt/cli.py

@@ -913,12 +913,12 @@ def prepare_and_parse_args(plugins, args):
         "security", "--hsts", action="store_true",
         help="Add the Strict-Transport-Security header to every HTTP response."
              " Forcing browser to use always use SSL for the domain."
-             " Defends against SSL Stripping.", dest="hsts")
+             " Defends against SSL Stripping.", dest="hsts", default=False)
     helpful.add(
         "security", "--uir", action="store_true",
         help="Add the \"Content-Security-Policy: upgrade-insecure-requests\""
              " header to every HTTP response. Forcing the browser to use"
-             " https:// for every http:// resource.", dest="uir")
+             " https:// for every http:// resource.", dest="uir", default=False)
     helpful.add(
         "security", "--strict-permissions", action="store_true",
         help="Require that all configuration files are owned by the current "

letsencrypt/client.py

@@ -410,6 +410,9 @@ class Client(object):
         :param options: options to enhancement, e.g. Strict-Transport-Security
         :type str
 
+        :raises .errors.Error: if no installer is specified in the
+            client.
+
         """
         msg = ("We were unable to set up enhancement %s for your server, "
                "however, we successfully installed your certificate."