diff --git a/git-flow-version b/git-flow-version
index ae551c6..cbb66b6 100644
--- a/git-flow-version
+++ b/git-flow-version
@@ -1 +1,27 @@
+#
+# git-flow -- A collection of Git extensions to provide high-level
+# repository operations for Vincent Driessen's branching model.
+#
+# Original blog post presenting this model is found at:
+#    http://nvie.com/archives/323
+#
+# Feel free to contribute to this project at:
+#    http://github.com/nvie/gitflow
+#
+# Copyright (c) 2010 by Vincent Driessen
+# Copyright (c) 2010 by Benedikt Böhm
+#
 GITFLOW_VERSION=0.2-dirty
+
+usage() {
+	echo "usage: git flow version"
+}
+
+cmd_help() {
+	usage
+	exit 0
+}
+
+cmd_default() {
+	echo "$GITFLOW_VERSION"
+}