add copyright to __init__.py in distributed folder

paddle/fluid/pybind/async_executor_py.cc

@@ -64,7 +64,7 @@ void BindAsyncExecutor(py::module* m) {
         return std::unique_ptr<framework::AsyncExecutor>(
             new framework::AsyncExecutor(scope, place));
       }))
-      .def("run_from_files", &framework::AsyncExecutor::RunFromFile)
+      .def("run_from_files", &framework::AsyncExecutor::RunFromFile);
 }  // end BindAsyncExecutor
 #endif
 }  // end namespace pybind

python/paddle/fluid/distributed/__init__.py

@@ -0,0 +1,12 @@
+#   Copyright (c) 2018 PaddlePaddle Authors. 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.
+# 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