Adding missing files for Apache release (#154)

* Adding missing files necessary for Apache release
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..e51409d
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,27 @@
+<!--
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+#
+-->
+
+# Changelog
+
+## v3.19.0
+
+* Initial release as an Apache Incubator project.
+* Add support for using HTTP Proxy with library (#147)
+* Allow users to set API version for platform API (#151)
+* Allow users to provide own client certificate and key in configuration (#152)
diff --git a/DISCLAIMER.txt b/DISCLAIMER.txt
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index 0000000..166d18c
--- /dev/null
+++ b/DISCLAIMER.txt
@@ -0,0 +1 @@
+Apache OpenWhisk JavaScript Client Library is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.
diff --git a/NOTICE.txt b/NOTICE.txt
new file mode 100644
index 0000000..b3b5bb1
--- /dev/null
+++ b/NOTICE.txt
@@ -0,0 +1,5 @@
+Apache OpenWhisk
+Copyright 2016-2019 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
diff --git a/package.json b/package.json
index e7b596c..297ee0f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openwhisk",
-  "version": "3.18.0",
+  "version": "3.19.0",
   "description": "JavaScript client library for the OpenWhisk platform",
   "main": "lib/main.js",
   "typings": "lib/main.d.ts",