diff --git a/README.md b/README.md
index b28f20c..c51f161 100644
--- a/README.md
+++ b/README.md
@@ -19,10 +19,10 @@ Python 3.7.3
 
 ### generate installer
 ```
-./venv/bin/python3 setup.py bdist_wheel
+python setup.py bdist_wheel
 ```
 
 ### local install
 ```
-./venv/bin/python3 -m pip install dist/cloudstate-0.5.0-py3-none-any.whl
+python -m pip install dist/cloudstate-0.1.0-py3-none-any.whl
 ```
\ No newline at end of file
diff --git a/cloudstate/cloudstate.py b/cloudstate/cloudstate.py
index 23dd86a..a341696 100644
--- a/cloudstate/cloudstate.py
+++ b/cloudstate/cloudstate.py
@@ -1,3 +1,8 @@
+"""
+Copyright 2020 Lightbend Inc.
+Licensed under the Apache License, Version 2.0.
+"""
+
 from dataclasses import (dataclass, field)
 from typing import List
 import os
@@ -25,7 +30,7 @@ def register_event_sourced_entity(self, entity: EventSourcedEntity):
     def start(self):
         server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
         add_EntityDiscoveryServicer_to_server(CloudStateEntityDiscoveryServicer(self.event_sourced_entities), server)
-        add_EventSourcedServicer_to_server(CloudStateEventSourcedServicer(self.event_sourced_entities),server)
+        add_EventSourcedServicer_to_server(CloudStateEventSourcedServicer(self.event_sourced_entities), server)
         port = os.environ.get('HOST', '127.0.0.1') + ':' + os.environ.get('PORT', '8080')
         server.add_insecure_port(port)
         pprint('Starting Cloudstate on ' + port)
diff --git a/cloudstate/contexts.py b/cloudstate/contexts.py
index fa8b9a7..6860216 100644
--- a/cloudstate/contexts.py
+++ b/cloudstate/contexts.py
@@ -1,3 +1,8 @@
+"""
+Copyright 2020 Lightbend Inc.
+Licensed under the Apache License, Version 2.0.
+"""
+
 from dataclasses import dataclass, field
 from typing import List
 
diff --git a/cloudstate/discovery_servicer.py b/cloudstate/discovery_servicer.py
index eb8c7a0..ac3e9e7 100755
--- a/cloudstate/discovery_servicer.py
+++ b/cloudstate/discovery_servicer.py
@@ -1,16 +1,7 @@
-# Copyright 2019 Lightbend Inc.
-#
-# 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.
+"""
+Copyright 2020 Lightbend Inc.
+Licensed under the Apache License, Version 2.0.
+"""
 
 import platform
 from dataclasses import dataclass
diff --git a/cloudstate/evensourced_servicer.py b/cloudstate/evensourced_servicer.py
index 6bc9211..6e54104 100644
--- a/cloudstate/evensourced_servicer.py
+++ b/cloudstate/evensourced_servicer.py
@@ -1,6 +1,13 @@
-from dataclasses import dataclass
+"""
+Copyright 2020 Lightbend Inc.
+Licensed under the Apache License, Version 2.0.
+"""
+
+import logging
+from pprint import pprint
 from typing import List
 
+from google.protobuf import symbol_database as _symbol_database
 from google.protobuf.any_pb2 import Any
 
 from cloudstate.entity_pb2 import Command
@@ -9,9 +16,6 @@
 from cloudstate.event_sourced_pb2 import EventSourcedInit, EventSourcedSnapshot, EventSourcedEvent, EventSourcedReply, \
     EventSourcedStreamOut
 from cloudstate.event_sourced_pb2_grpc import EventSourcedServicer
-from pprint import pprint
-from google.protobuf import symbol_database as _symbol_database
-import logging
 
 _sym_db = _symbol_database.Default()
 
diff --git a/cloudstate/event_sourced_context.py b/cloudstate/event_sourced_context.py
index a6763e1..8e7d871 100644
--- a/cloudstate/event_sourced_context.py
+++ b/cloudstate/event_sourced_context.py
@@ -1,3 +1,8 @@
+"""
+Copyright 2020 Lightbend Inc.
+Licensed under the Apache License, Version 2.0.
+"""
+
 from dataclasses import dataclass, field
 from typing import List, Any
 
diff --git a/cloudstate/event_sourced_entity.py b/cloudstate/event_sourced_entity.py
index b0d9d78..37cf697 100644
--- a/cloudstate/event_sourced_entity.py
+++ b/cloudstate/event_sourced_entity.py
@@ -1,3 +1,8 @@
+"""
+Copyright 2020 Lightbend Inc.
+Licensed under the Apache License, Version 2.0.
+"""
+
 from dataclasses import dataclass, field
 from typing import List, Callable, Any, Mapping, MutableMapping
 import inspect
diff --git a/cloudstate/tests/test_cloudstate.py b/cloudstate/tests/test_cloudstate.py
index 6098302..9630c91 100644
--- a/cloudstate/tests/test_cloudstate.py
+++ b/cloudstate/tests/test_cloudstate.py
@@ -1,7 +1,12 @@
-# content of test_sample.py
+"""
+Copyright 2020 Lightbend Inc.
+Licensed under the Apache License, Version 2.0.
+"""
+
+
 def inc(x):
     return x + 1
 
 
 def test_answer():
-    assert inc(3) == 4 
\ No newline at end of file
+    assert inc(3) == 4
diff --git a/cloudstate/version.py b/cloudstate/version.py
index 1a42a57..bdb07aa 100644
--- a/cloudstate/version.py
+++ b/cloudstate/version.py
@@ -1,8 +1,6 @@
-# -*- coding: utf-8 -*-
-
 """
 Copyright 2020 Lightbend Inc.
 Licensed under the Apache License, Version 2.0.
 """
 
-__version__ = "0.5.0"
+__version__ = "0.1.0"
diff --git a/scripts/fetch-cloudstate-pb.sh b/scripts/fetch-cloudstate-pb.sh
index 1484904..bf5873f 100644
--- a/scripts/fetch-cloudstate-pb.sh
+++ b/scripts/fetch-cloudstate-pb.sh
@@ -14,7 +14,7 @@ function fetch() {
 
 tag=$1
 
-# CloudState protocol
+# Cloudstate protocol
 fetch "protocol/cloudstate/entity.proto" $tag
 fetch "protocol/cloudstate/event_sourced.proto" $tag
 fetch "protocol/cloudstate/function.proto" $tag
@@ -24,7 +24,7 @@ fetch "protocol/cloudstate/crdt.proto" $tag
 fetch "example/shoppingcart/shoppingcart.proto" $tag
 fetch "example/shoppingcart/persistence/domain.proto" $tag
 
-# CloudState frontend
+# Cloudstate frontend
 fetch "frontend/cloudstate/entity_key.proto" $tag
 
 # dependencies
diff --git a/shoppingcart/Dockerfile b/shoppingcart/Dockerfile
index 228185c..96cea7a 100644
--- a/shoppingcart/Dockerfile
+++ b/shoppingcart/Dockerfile
@@ -1,7 +1,7 @@
 FROM python:3.8.0-slim
 
 COPY ./dist /dist
-RUN pip install /dist/cloudstate-0.5.0-py3-none-any.whl
+RUN pip install /dist/cloudstate-0.1.0-py3-none-any.whl
 
 WORKDIR /app
 COPY ./shoppingcart ./shoppingcart
diff --git a/shoppingcart/shopping_cart.py b/shoppingcart/shopping_cart.py
index b41582b..077034a 100644
--- a/shoppingcart/shopping_cart.py
+++ b/shoppingcart/shopping_cart.py
@@ -1,3 +1,8 @@
+"""
+Copyright 2020 Lightbend Inc.
+Licensed under the Apache License, Version 2.0.
+"""
+
 from cloudstate.cloudstate import CloudState
 from shoppingcart.shopping_cart_entity import entity as shopping_cart_entity
 import logging
diff --git a/shoppingcart/shopping_cart_entity.py b/shoppingcart/shopping_cart_entity.py
index 067aac3..2553cd7 100644
--- a/shoppingcart/shopping_cart_entity.py
+++ b/shoppingcart/shopping_cart_entity.py
@@ -1,3 +1,8 @@
+"""
+Copyright 2020 Lightbend Inc.
+Licensed under the Apache License, Version 2.0.
+"""
+
 from dataclasses import dataclass, field
 from typing import MutableMapping