Update CLI usage.

README.rst

@@ -21,8 +21,7 @@ Usage
 
 .. code:: shell
 
-   usage: mnpw [-h] [-v] [-V] [-d] [-t TIMEOUT]
-               command [arguments [arguments ...]]
+  usage: mnpw [-h] [-v] [-V] [-d] [-q] [-w] [-u] [-e] [-t TIMEOUT] command [arguments ...]
 
   My Nagios plugin wrapper.
 
@@ -35,9 +34,13 @@ Usage
     -v, --verbose         Verbose output
     -V, --version         show program's version number and exit
     -d, --dry-run         Dry-run, don't notify
+    -q, --quiet, --silent
+                          No output, except for errors.
+    -w, --warn            Notify when the check status is WARNING.
+    -u, --unknown         Notify when the check status is UNKNOWN.
+    -e, --errors          Notify on check errors.
     -t TIMEOUT, --timeout TIMEOUT
-                            Command timeout (in seconds), defaults to
-                            10
+                          Command timeout (in seconds), defaults to 10
 
 Usage as library
 ----------------