Fix head

contrib/go2docker/cacerts.go

 /*
-Copyright 2014 Google Inc. All rights reserved.
+Copyright 2015 Google Inc. All rights reserved.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@ 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 main
 
 const caCerts = `-----BEGIN CERTIFICATE-----