Improve the README and LICENSE

LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2019 Vinicius Moraes
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -4,3 +4,60 @@
 [![Codecov branch](https://img.shields.io/codecov/c/github/vsmoraes/go-commandbus/master.svg?style=flat-square)](https://codecov.io/gh/vsmoraes/go-commandbus)
 [![GoDoc](https://img.shields.io/badge/godoc-reference-5272B4.svg?style=flat-square)](https://godoc.org/github.com/vsmoraes/go-commandbus)
 [![Go Report Card](https://goreportcard.com/badge/github.com/vsmoraes/go-commandbus?style=flat-square)](https://goreportcard.com/report/github.com/vsmoraes/go-commandbus)
+[![License](https://img.shields.io/badge/License-MIT-blue.svg?style=flat-square)](https://github.com/vsmoraes/go-commandbus/blob/master/LICENSE)
+
+A slight and pluggable command-bus for Go.
+
+## Install
+
+Use go get.
+```sh
+$ go get github.com/vsmoraes/go-commandbus
+```
+
+Then import the package into your own code:
+```
+import "github.com/vsmoraes/go-commandbus"
+```
+
+## Usage
+```go
+package main
+
+import (
+	"context"
+	"log"
+
+	"github.com/vsmoraes/go-commandbus"
+)
+
+type CreateUser struct {
+	Name string
+}
+
+func CreateHandler(ctx context.Context, cmd *CreateUser) error {
+	log.Printf("user %s created", cmd.Name)
+
+	return nil
+}
+
+func main() {
+	bus := commandbus.New()
+
+	err := bus.Register(&CreateUser{}, CreateHandler)
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	err = bus.Execute(context.Background(), &CreateUser{"go-commandbus"})
+
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+```
+
+## License
+
+This project is released under the MIT licence. See [LICENSE](https://github.com/vsmoraes/go-commandbus/blob/master/LICENSE) for more details.