diff --git a/vendor/github.com/coreos/etcd/lease/doc.go b/vendor/github.com/coreos/etcd/lease/doc.go
new file mode 100644
index 0000000..a74eaf7
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+++ b/vendor/github.com/coreos/etcd/lease/doc.go
@@ -0,0 +1,16 @@
+// Copyright 2016 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package lease provides an interface and implementation for time-limited leases over arbitrary resources.
+package lease