Change the copyright back to unfilled template (#355)

Author: violagao

LICENSE.txt

@@ -187,7 +187,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2016-2018 The Apache Software Foundation
+   Copyright [yyyy] [name of copyright owner]
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

build.gradle

@@ -56,7 +56,7 @@ dependencies {
         build(['name':'golang.org/x/sys/unix', 'version':'7f918dd405547ecb864d14a8ecbbfe205b5f930f', 'transitive':false])
         build(['name':'gopkg.in/yaml.v2', 'version':'cd8b52f8269e0feb286dfeef29f8fe4d5b397e0b', 'transitive':false])
         build(['name':'github.com/ghodss/yaml', 'version':'0ca9ea5df5451ffdf184b4428c902747c2c11cd7', 'transitive':false])
-        build(['name':'github.com/apache/incubator-openwhisk-client-go/whisk','version':'90976ef8d8d50e5c36059de61b943707b12cda6c','transitive':false])
+        build(['name':'github.com/apache/incubator-openwhisk-client-go/whisk','version':'d7cee96e83a1f38413a1f5286bd524dac72686c9','transitive':false])
         // END - Imported from Godeps
         test name:'github.com/stretchr/testify', version:'b91bfb9ebec76498946beb6af7c0230c7cc7ba6c', transitive:false //, tag: 'v1.2.0'
         test name:'github.com/spf13/viper', version:'aafc9e6bc7b7bb53ddaa75a5ef49a17d6e654be5', transitive:false