diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..ea56f1c
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,41 @@
+# Change Log
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## [Unreleased]
+
+## [0.5.0] - Feb 03, 2021
+
+### Added
+
+- Developer Account endpoints [#40](https://github.com/3scale/3scale-porta-go-client/pull/40)
+- Developer User endpoints [#41](https://github.com/3scale/3scale-porta-go-client/pull/41)
+
+## [0.4.0] - Dev 10, 2020
+
+### Added
+
+- Policy Registry endpoints [#39](https://github.com/3scale/3scale-porta-go-client/pull/39)
+
+## [0.3.0] - Dev 04, 2020
+
+### Added
+
+- ActiveDocs endpoints [#38](https://github.com/3scale/3scale-porta-go-client/pull/38)
+
+## [0.2.0] - Nov 23, 2020
+
+### Added
+
+- Oidc configuration endpoints [#35](https://github.com/3scale/3scale-porta-go-client/pull/35)
+- Add proxy type fields for oidc authorization [#36](https://github.com/3scale/3scale-porta-go-client/pull/36)
+- Product read endpoint [#37](https://github.com/3scale/3scale-porta-go-client/pull/37)
+
+## [0.1.0] - Nov 16, 2020
+
+[Unreleased]: https://github.com/3scale/3scale-porta-go-client/compare/v0.5.0...HEAD
+[0.5.0]: https://github.com/3scale/3scale-porta-go-client/releases/tag/v0.5.0
+[0.4.0]: https://github.com/3scale/3scale-porta-go-client/releases/tag/v0.4.0
+[0.3.0]: https://github.com/3scale/3scale-porta-go-client/releases/tag/v0.3.0
+[0.2.0]: https://github.com/3scale/3scale-porta-go-client/releases/tag/v0.2.0
+[0.1.0]: https://github.com/3scale/3scale-porta-go-client/releases/tag/v0.1.0
diff --git a/README.md b/README.md
index 546af43..82ef209 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,133 @@
 # 3scale-porta-go-client
+[![CircleCI](https://circleci.com/gh/3scale/3scale-porta-go-client.svg?style=svg)](https://circleci.com/gh/3scale/3scale-porta-go-client)
+[![License](https://img.shields.io/badge/license-Apache--2.0-blue.svg)](http://www.apache.org/licenses/LICENSE-2.0)
+[![GitHub release](https://img.shields.io/github/v/release/3scale/3scale-porta-go-client.svg)](https://github.com/3scale/3scale-porta-go-client/releases/latest)
+
 3scale Account Management API Client
+
+## Installation
+
+To install, run:
+
+```bash
+$ go get github.com/3scale/3scale-porta-go-client/client
+```
+
+And import using:
+
+```go
+import "github.com/3scale/3scale-porta-go-client/client"
+```
+
+## Usage
+
+Basic usage
+
+```go
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/3scale/3scale-porta-go-client/client"
+)
+
+func jsonPrint(obj interface{}) {
+	jsonData, err := json.MarshalIndent(obj, "", "  ")
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(string(jsonData))
+}
+
+func main() {
+	adminPortalURL := "https://3scale-admin.example.com"
+	threescaleAccessToken := "************************"
+
+	adminPortal, err := client.NewAdminPortalFromStr(adminPortalURL)
+	if err != nil {
+		fmt.Printf("%+v\n", err)
+		return
+	}
+
+	threescaleClient := client.NewThreeScale(adminPortal, threescaleAccessToken, nil)
+
+	backendList, err := threescaleClient.ListBackendApis()
+	if err != nil {
+		fmt.Printf("%+v\n", err)
+		return
+	}
+
+	jsonPrint(backendList)
+}
+```
+
+The `client.NewThreeScale` constructor allows injecting you own customized [\*http.Client](https://golang.org/src/net/http/client.go).
+
+In this example, the customized transport will log all http requests and responses
+
+```go
+type DebuggerTransport struct {
+	Transport http.RoundTripper
+}
+
+// RoundTrip is the core part of this module and implements http.RoundTripper.
+// Executes HTTP request with request/response logging.
+func (t *DebuggerTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	t.logRequest(req)
+
+	resp, err := t.transport().RoundTrip(req)
+	if err != nil {
+		return resp, err
+	}
+
+	t.logResponse(resp)
+
+	return resp, err
+}
+
+func (t *DebuggerTransport) logRequest(req *http.Request) {
+	dump, _ := httputil.DumpRequestOut(req, true)
+	fmt.Println(string(dump))
+}
+
+func (t *DebuggerTransport) logResponse(resp *http.Response) {
+	dump, _ := httputil.DumpResponse(resp, true)
+	fmt.Println(string(dump))
+}
+
+func (t *DebuggerTransport) transport() http.RoundTripper {
+	if t.Transport != nil {
+		return t.Transport
+	}
+
+	return http.DefaultTransport
+}
+
+var transport http.RoundTripper = &DebuggerTransport{}
+
+threescaleClient := client.NewThreeScale(adminPortal, threescaleAccessToken, &http.Client{Transport: transport})
+```
+
+In this example, the customized transport allow insecure TLS connections (**warning**: this use is not recommended)
+
+```go
+var transport http.RoundTripper = &http.Transport{
+	TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+}
+
+threescaleClient := client.NewThreeScale(adminPortal, threescaleAccessToken, &http.Client{Transport: transport})
+```
+
+## Development
+
+### Testing
+
+```
+$ make test
+```
+
+## Contributing
+
+Bug reports and pull requests are welcome on [GitHub](https://github.com/3scale/3scale-porta-go-client)