Merge pull request #172 from shiftstack/gophercloud_authors

Credit the Gophercloud authors

Author: EmilienM

LICENSE

@@ -1,3 +1,18 @@
+Copyright Gophercloud 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.
+
+------
+
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/