Pr/avatar (#319)

* feat: add avatar api
close #310

* chore: add description line

* fix: typo

* chore: reformat the json string to make it more readable and fix few bad indents

* fix: minimum go version

* feat: upload to Micro's CDN

* chore: delete redundant blank line

* chore: update README.md

avatar/main.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"github.com/micro/services/avatar/handler"
+	pb "github.com/micro/services/avatar/proto"
+	imagePb "github.com/micro/services/image/proto"
+
+	"github.com/micro/micro/v3/service"
+	"github.com/micro/micro/v3/service/logger"
+)
+
+func main() {
+	// Create service
+	srv := service.New(
+		service.Name("avatar"),
+		service.Version("latest"),
+	)
+
+	// Register handler
+	hdlr := handler.NewAvatar(imagePb.NewImageService("image", srv.Client()))
+	pb.RegisterAvatarHandler(srv.Server(), hdlr)
+
+	// Run service
+	if err := srv.Run(); err != nil {
+		logger.Fatal(err)
+	}
+}