Adjust features section in the README.md (#78)

* Moved `Features` documentation section, added emojis

* Updated examples in README.md

README.md

@@ -10,7 +10,7 @@
 
 Provides primitives to perform ordered **GRA**ceful **TERM**ination (aka shutdown) in Go application.
 
-# Description
+# ⚡ ️️Description
 
 Library provides fluent methods to register ordered application termination (aka shutdown) [hooks](https://pkg.go.dev/github.com/skovtunenko/graterm#Hook),
 and block the main goroutine until the registered `os.Signal` will occur. 
@@ -21,7 +21,14 @@ same [Order](https://pkg.go.dev/github.com/skovtunenko/graterm#Order) will be ex
 It is possible to set individual timeouts for each registered termination [hook](https://pkg.go.dev/github.com/skovtunenko/graterm#Hook) 
 and global termination timeout for the whole application.
 
-# Usage
+# 🎯 Features
+
+* Dependency only on a standard Go library (except tests).
+* Component-agnostic (can be adapted to any 3rd party technology).
+* Clean and tested code: 100% test coverage, including goroutine leak tests.
+* Rich set of examples.
+
+# ⚙️ Usage
 
 Get the library:
 ```bash
@@ -56,7 +63,7 @@ const (
 Register some termination [Hooks](https://pkg.go.dev/github.com/skovtunenko/graterm#Hook) with priorities:
 ```go
 terminator.WithOrder(HTTPServerTerminationOrder).
-    WithName("HTTP Server").
+    WithName("HTTP Server"). // setting a Name is optional and will be useful only if logger instance provided
     Register(1*time.Second, func(ctx context.Context) {
         if err := httpServer.Shutdown(ctx); err != nil {
             log.Printf("shutdown HTTP Server: %+v\n", err)
@@ -71,18 +78,11 @@ if err := terminator.Wait(appCtx, 20*time.Second); err != nil {
 }
 ```
 
-# Features
-
-* dependency only on a standard Go library
-* Component-agnostic (can be adapted to any 3rd party technology)
-* 100% test coverage, including goroutine leak tests
-* Rich set of examples
-
-# Versioning
+# 👀 Versioning
 
 The library follows SemVer policy. With the release of v1.0.0 the public API is stable. 
 
-# Example
+# 📚 Example
 
 Each public function has example attached to it. Here is the simple one:
 
@@ -108,10 +108,11 @@ func main() {
 
 	// create new Terminator instance:
 	terminator, appCtx := graterm.NewWithSignals(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	terminator.SetLogger(log.Default()) // Optional step
 
 	// Register HTTP Server termination hook:
 	terminator.WithOrder(HTTPServerTerminationOrder).
-		WithName("HTTP Server").
+		WithName("HTTP Server"). // setting a Name is optional and will be useful only if logger instance provided
 		Register(1*time.Second, func(ctx context.Context) {
 			log.Println("terminating HTTP Server...")
 			defer log.Println("...HTTP Server terminated")
@@ -126,7 +127,7 @@ func main() {
 
 	// Register Database termination hook:
 	terminator.WithOrder(DBTerminationOrder).
-		WithName("DB").
+		WithName("DB"). // setting a Name is optional and will be useful only if logger instance provided
 		Register(1*time.Second, func(ctx context.Context) {
 			log.Println("terminating DB...")
 			defer log.Println("...DB terminated")
@@ -147,7 +148,7 @@ func main() {
 }
 ```
 
-Integration with HTTP server
+💡 Integration with HTTP server
 -----------
 
 The library doesn't have out of the box support to start/terminate the HTTP server, but that's easy to handle:
@@ -173,11 +174,13 @@ func main() {
 
     // create new Terminator instance:
     terminator, appCtx := graterm.NewWithSignals(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	terminator.SetLogger(log.Default()) // Optional step
 
     // Create an HTTP Server and add one simple handler into it:
     httpServer := &http.Server{
-        Addr:    ":8080",
-        Handler: http.DefaultServeMux,
+		ReadHeaderTimeout: 60 * time.Second, // fix for potential Slowloris Attack
+        Addr:              ":8080",
+        Handler:           http.DefaultServeMux,
     }
     http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
         fmt.Fprintf(w, "hello, world!")
@@ -192,7 +195,7 @@ func main() {
 
     // Register HTTP Server termination hook:
     terminator.WithOrder(HTTPServerTerminationOrder).
-        WithName("HTTPServer").
+        WithName("HTTPServer"). // setting a Name is optional and will be useful only if logger instance provided
         Register(10*time.Second, func(ctx context.Context) {
             if err := httpServer.Shutdown(ctx); err != nil {
                 log.Printf("shutdown HTTP Server: %+v\n", err)
@@ -208,7 +211,7 @@ func main() {
 
 The full-fledged example located here: [example.go](https://github.com/skovtunenko/graterm/blob/main/internal/example/example.go)
 
-Testing
+📖 Testing
 -----------
 Unit-tests with code coverage:
 ```bash
@@ -220,13 +223,12 @@ Run linter:
 make code-quality
 ```
 
-LICENSE
+⚠️ LICENSE
 -----------
-MIT
+[MIT](https://github.com/skovtunenko/graterm/blob/main/LICENSE)
 
-AUTHORS
+🕶️ AUTHORS
 -----------
 
-Sergiy Kovtunenko <@skovtunenko>
-
-Oleksandr Halushchak <ohalushchak@exadel.com>
+* [Sergiy Kovtunenko](https://github.com/skovtunenko)
+* [Oleksandr Halushchak](ohalushchak@exadel.com)