new example structure

_examples/area/README.md

@@ -1,6 +1,10 @@
-# area
+### area/demo
 
-![Animation](animation.svg)
+![Animation](https://raw.githubusercontent.com/pterm/pterm/master/_examples/area/demo/animation.svg)
+
+<details>
+
+<summary>SHOW SOURCE</summary>
 
 ```go
 package main
@@ -25,3 +29,6 @@ func main() {
 }
 
 ```
+
+</details>
+

_examples/area/demo/README.md

@@ -0,0 +1,27 @@
+# area/demo
+
+![Animation](animation.svg)
+
+```go
+package main
+
+import (
+	"time"
+
+	"github.com/pterm/pterm"
+)
+
+func main() {
+	pterm.Info.Println("The previous text will stay in place, while the area updates.")
+	pterm.Print("\n\n") // Add two new lines as spacer.
+
+	area, _ := pterm.DefaultArea.WithCenter().Start() // Start the Area printer, with the Center option.
+	for i := 0; i < 10; i++ {
+		str, _ := pterm.DefaultBigText.WithLetters(pterm.NewLettersFromString(time.Now().Format("15:04:05"))).Srender() // Save current time in str.
+		area.Update(str)                                                                                                // Update Area contents.
+		time.Sleep(time.Second)
+	}
+	area.Stop()
+}
+
+```