diff --git a/responder/cli.py b/responder/cli.py
index e424f81..e6f8407 100644
--- a/responder/cli.py
+++ b/responder/cli.py
@@ -1 +1,17 @@
+"""Responder.
+
+Usage:
+  responder
+  responder --version
+
+Options:
+  -h --help     Show this screen.
+  --version     Show version.
+  --speed=<kn>  Speed in knots [default: 10].
+  --moored      Moored (anchored) mine.
+  --drifting    Drifting mine.
+
+"""
+
+
 import docopt