Update documents (#205)

README.md

@@ -1,5 +1,5 @@
 # aws-iot-device-sdk-go
 
-[![GoDoc](https://godoc.org/github.com/seqsense/aws-iot-device-sdk-go?status.svg)](http://godoc.org/github.com/seqsense/aws-iot-device-sdk-go) [![Build Status](https://travis-ci.com/seqsense/aws-iot-device-sdk-go.svg?branch=master)](https://travis-ci.com/seqsense/aws-iot-device-sdk-go) [![codecov](https://codecov.io/gh/seqsense/aws-iot-device-sdk-go/branch/master/graph/badge.svg)](https://codecov.io/gh/seqsense/aws-iot-device-sdk-go) [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/seqsense/aws-iot-device-sdk-go/blob/master/LICENSE)
+[![Go Reference](https://pkg.go.dev/badge/godoc.org/github.com/seqsense/aws-iot-device-sdk-go.svg)](https://pkg.go.dev/godoc.org/github.com/seqsense/aws-iot-device-sdk-go) ![ci](https://github.com/seqsense/aws-iot-device-sdk-go/workflows/ci/badge.svg) [![codecov](https://codecov.io/gh/seqsense/aws-iot-device-sdk-go/branch/master/graph/badge.svg)](https://codecov.io/gh/seqsense/aws-iot-device-sdk-go) [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/seqsense/aws-iot-device-sdk-go/blob/master/LICENSE)
 
-Package awsiotdev implements offline queueing and reconnecting features of MQTT protocol.
+Package awsiotdev implements AWS IoT presigned WebSockets dialer for [github.com/at-wat/mqtt-go](https://github.com/at-wat/mqtt-go), and AWS IoT functionalities.

awsiotdev.go

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Package awsiotdev implements offline queueing and reconnecting features of MQTT protocol.
+// Package awsiotdev implements AWS IoT presigned WebSockets dialer for github.com/at-wat/mqtt-go, and AWS IoT functionalities.
 package awsiotdev
 
 import (