Bump to version 1.0.0 (#3)

Signed-off-by: Xuanwo <[email protected]>

CHANGELOG.md

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+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/)
+and this project adheres to [Semantic Versioning](https://semver.org/).
+
+## v1.0.0 - 2021-02-08
+
+### Added
+
+- Implement cos services.

README.md

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+# go-services-cos
+
+[![Build Status](https://github.com/aos-dev/go-service-cos/workflows/Unit%20Test/badge.svg?branch=master)](https://github.com/aos-dev/go-service-cos/actions?query=workflow%3A%22Unit+Test%22)
+[![License](https://img.shields.io/badge/license-apache%20v2-blue.svg)](https://github.com/Xuanwo/storage/blob/master/LICENSE)
+[![Join the chat](https://img.shields.io/badge/chat-online-blue?style=flat&logo=zulip)](https://aos-dev.zulipchat.com/join/c3sqj64sp53tlau7oojg3yll/)
+
+cos services support for [go-storage](https://github.com/aos-dev/go-storage)