add the licenses obtained algorithmically

docs/licenses/botocore.txt

@@ -0,0 +1,12 @@
+Copyright 2012-2017 Amazon.com, Inc. or its affiliates. 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. A copy of
+the License is located at
+
+    http://aws.amazon.com/apache2.0/
+
+or in the "license" file accompanying this file. This file 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.